I have been called 5 times so far;  very annoying!  It's a recording asking for my I.D. and PIN number????  I am not involved in such a study!  I do NOT want to be on this organization's list!  How do I get off?????
Oh yeah, they have changed the last digit three times!

I get calls from this number every month, on the 23rd.

I was baffled, at first - then it dawned on me, I am in a medical research program and committed to calling in my diary information once each month ON THE 23RD. Duh!

If you get calls from this number, ask yourself: "What am I supposed to DO today?".

(It WOULD be nice if a recorded voice said something like: "Please call 1-800-xxx-xxxx to report you diary info", or something similar...)

I entered this number into my cell phone, and put in a name that reminded me of the clinical trial, so from n ow on I will know it's a reminder...

I received 2 calls. One from 281-295-4881 and one from 4882. Both had a lady's recorded voice saying "Please enter your PIN number followed by the "hash" sign. I hung up. I am in a "Zest" study group for a vacination for shingles age group 50-59 but they are not supposed to call until the 22nd and this call was on the 17th.

I just spoke to an operator in Sugarland, Tx where the number originates. I was able to get her to tell me the source company. I called the corporate office and complained to a "receptionist" who would not give me her name..... maybe if everybody calls they will correct the situation since I have been receiving calls and it is October!
number of origin  281 295 4800

Icon Research
Sugarland, Tx

below is their website with corporate headquarter numbers;

http://www.iconsing.com/index.asp?gref=6,6&ge ... 14&continent=14

I have received 2 calls today from this number.  I missed both calls but in an attempt to reach the caller, it rings busy.

three nights in a row have received two calls around 3:00 am.  when I pick up there is a recorded message to enter my pin number.

This is not a prank call... I thought it was as well.  It's a reminder call issued to people who are enrolled in a study.

this number keeps calling my cell phone. After several times of me saying Hello, a recorded voice says "good bye". Does the same thing even if I don't answer the call. My solution, just don't answer it.