Just found out that my phone company overcharging me by 12%. They provide a call details with individual charge and total but total is 12% higher than it should be. I went 5 month back and each bill has a hidden 12% example: call 5.00 call 5.00 call 90.00 total 112.00 I called customer service and of course this is the first time they ever heard about it. Than I googled company and found similar complains in the past. Can I do anything about it besides changing company? Thank you.