Haven't picked up, but I called the number and was given a recording that it's from TRG Customer solutions, and they refer you to visit them online. They also give the option of entering your number to be taken off the call list. They're an outsourced call center, so I'm still not sure who they're calling on behalf of.

fin a number

it is MBNA guys

At first I didn't even pick up, but they kept calling. So I picked up, and theres nothing on the end of the line. I try calling it back, nothing.

Im being getting this phone call from last moth, I answer once and is a insurence company behalf MBNA, is just selling, I said no, and they keep calling and calling......I don't not answer anymore
Is soo Annoying..

Was fed up with this number calling me more than once per day, after 7pm, and on weekends.  

If you call the number back, it will have a recording that explains that it is a telemarketing company.  If you want your number removed (which you likely do if you're reading this), just wait for the option to do so at the end of the recorded message.  
I had to call four times, as the first three i got a busy signal.  
Good luck!