calls 2 to 3 times a day no there when you asr. call back unable to get anyone or leave message. annoying

I keep getting calls from this number, however it only rings once then they hang up and do not leave a message. I finally called back and the person who picked up asked me for my account number or my FULL social security number and they cannot look up my information if they don't have either of those. They claim they're wells fargo's collection department? I called my branch concerned and they told me that they would report the number and if they called me again to tell them that i was going to report them as well. They called back and I told them that I was going to report their number and that my branch had already done so. The man was very offended and told me that if I call the customer service number on the back of my card that I would be transfered to them. It sounds legit, but my branch told me absoltly DO NOT give any information to people from this number.

Same thing, 1st time today but when I said hello the call ended.

Received two calls. When I answer, an automated voice says "Goodbye" and hangs up.

they call my phone every day 4 times a day and leave no message.