Report them to your local police dept as a possible ident theft person and you will no longer get phone calls from that number but they will use a new number to call you.

Using reverse lookup, this is what I found:
Number: 5203602659
Search Date: 07/09/2010
Location: Tucson , AZ
Service Provider : NEW CINGULAR WIRELESS PCS LLC

This number keeps calling me over and over. I finally pressed 1 and the guy came on the phone. I told him to quit wasting my time. The guy threatened to come by my house to kick my a**.
Who in their right mind would actually think they'd upsell you on credit services this way?

I AGREE...BY THE WAY, INTERESTING NAME YOU GOT THERE!!!!!!

to whom it may concern you are calling my minor child and I am turning you in for child solicitation

Just received the second such call on a brand new cell phone paid for by my employer.  Called twice within 20 minutes in the middle of the afternoon.  Also calling from 5203602728 three days later during dinner.  So far, just hang ups, but wanted to check out the number to see who it might be.  I guess it's time to put this phone on the do not call list.

I tried to call them back, but line was busy... Probably some junk

Ditto

Lowlife telemarketers soliciting "business" from a teenager on an unlisted cell phone.  Please let me find out who you are and scare the crap out of you like you did my daughter!

They just called me and I think they called from restricted just 19 minutes before that. I text them and they didn't answer. I was going to tell them that I wasn't mad or upset or anything, I just wanted to know who was on the other end. At least know a name.

They keep calling me and calling me, im sick and tired of it.  Heres the catch, from so many SPAM calls, i've chucked the phone into the wall more than once, now the ringer is broken haha.  It just lights up the display and doesnt make a peep so call all you want, idiots - no one will answer.  We should all get together and find the guy who keeps calling and pay off a big black guy to slam him in the hiney.  Maybe we'll get a few hours peace while he limps around bleeding for a few hours afterwords!

same here!

I just got call from same number who the heal is this number 5203602659

no message

Seems like companies like this will buy phone number lists, and go thru and call people, even though theyre not suppose to

i keep getting relentless calls from this individual. it sounds like punk a** mexican kid. he won't answer me who he is. i called him back to see who it was and he he answers every time. i asked him who he was again and he said that he just called the wrong number and hung up on me. but kept calling back about 17 more time within 10 minutes from all kinds of numbers and blocked numbers and everything. so i started calling him over and over and over an harassing him every time. he kept answering so i kept screaming at him. is he can call me and harass me then im calling him and harassing him. i dont care, i have free unlimited minutes, we can do this all day long mother f***er!

on the last call i was nice when he answered and just simply asked who he was, then he told me it was a wrong number again, then i told him that he is a lying little s**t and that his number has been reported as harassing hundreds and hundreds of people and then i told him that i pinged his phone and i know where he is and i have the local autorities and the FBI listening and he better run and hide or disconnect his phone fast because they're coming for him... he hung up. then i called back about 2 minutes later and an automated message came up in spanish that said his number has been disconnected.

I have a cheapie TracFone that I use for emergency only. Nobody has the number except a couple of friends. I got the same call. I answered just so I could tell them off.

First I heard a warm robot voice telling me about the credit card rates, no problems with my current cards, press one to speak with a live operator.

I pressed "1".

The man rattled off his name so fast I didn't catch it, and asked "Who um I speakin' with today?"

I said "Probably not the person you expect, because this is a TracFone and I get a lot of calls for whomever had the number before—" CLICK

They hung up on me. SCAM!!!!

I don't have any credit cards right now, either, and nobody has my number. I called back from the land line, but the mailbox is full.

a** hoe crook

stop f#$% calling me you are wasting my mins.

The don't leave a message, and when you call back the mailbox is full.

s**t eating puke

someone called my phone no message wish I could block it they continue to call

Pre-recorded mesaage identifies them as Cardholder Services, and instructs the listener to press '1' to speak to a live operator When I asked to be removed from the list, they hung up. This is the fifth time I've made this request.

They are calling my emergency work number and my cell phone even though I've repeatedly asked them to stop. They're bottom feeders.

Junk call

This number just called me too, left no voicemail..who the heck are they and how do they get unlisted numbers?

WTF THEY CALLING ME TOO WITH ALL THIS BU***HIT!!!!!!!!!

I thinks its a credit card consolidator

Dude i have the same problem and i don't even own a credit card