They call every two minutes and refuse to leave a message.

I've received 18 phone calls from this 1-314-216-3685 in just a few hours. they will not stop. I'm wondering if this call is somehow giving them acess to my phone to make calls.

Got multiple calls from someone (every couple of hours, and it's a recorded message) saying they are calling for market research, and give this phone number to call. I don't have caller ID, so I am not sure if this is the number that they are calling from. I call this number and the phone company comes in and says that it's an invalid number (no longer in business or something like this). Sounds suspicious.