Received two text messages, "PLEASE CALL". Didn't bother calling back, but did ask who it was through a text reply but received no answer.

I didn't answer first time, but when it rang again right away I picked up and it was a friend that lives in Mexico calling.  I think Lyle's post is spot on.

What a scam! Even the name of the company sounds fake.
Got a call from this number today as a follow up to their earlier call. Their first call was from 1-213-363-5152 which I answered just to see how far they'd go. The initial call was from a company called m4sunset. They told me I'd won a prize to Cancun Meixco. They would give me all the details about my prize and at the end of the call I had to confirm if I accepted it or not. My 'Prize' : 6 days 5 nights in Cancun, Mexico and 5 days 4 nights in Florida for the 'too good to be true' cost of $598 USD. They also threw in some disney passes and ground transportation something. This so called vacation prize was valid for 2 years. All I had to do was confirm at the end of the call that I agreed to what was purchased and give them my credit card number. I said "Thanks but no thanks. I can't afford a $600 charge to my credit card right now."
The next day I got another call from them (caller id: Unknown number). They said I was a valued client and since I was not comfortable about the cost they were willing to give me a special rate of $349USD for both Cancun and Florida plus they'd through in another destination as Bonus. They called again today from this number 1-915-534-8299 to ask if I was still interested in their offer.

Called my cell phone at 10:30 am on a Sunday, only friends have my cell number. Didn't answer.

I missed a call from this number when I called back there was a busy signal

This is a common caller id number used by Cablemas Voice IP internet service provider from Baja California.

Supposedly,a caller calling from ENSONATA Mexico,yet this is an EL PASO TEXAS area code and phone number.Claimed to be calling regarding a craigslist post.Ensonata is nowhere near El Paso TX and is near San Diego CA,not TX.I thought it was weird and Im not answering again or selling anything to this guy.

This is a call coming from an internet service provider(Cablemas) in Cd. Juarez, Mexico.  Everytime my friend calls me Mexico, this # is displayed.

they call from this number in spanish asking for a company I am related, and then hang up try to call but got  a busy signal

missed call from this number.