This number is Global Credit.  I called the number back, after blocking my number.  They called last year, and I told them they had the wrong number.  They continue to call my cell phone numerous times a day, and have even used other numbers.  How do I stop this?  I am getting very angry.

I have a charge on my phone bill for calling 807-788-1246.  It cost me $3.49 + 13% sales tax.  (Feb. 20, 2015)
I did not call them.  When I look the number up (reverse # lookup, the number 807-788-0654 comes up. It is costing me $4.00 a month and I am not calling them. the name on my phone bill comes up as Triton Gloabal  Assist-ann.
What is going on and it needs to stop!!!