wrong biling + attittude + lack of knowledge

Cell c incorrectly billed my acc, contacted call centre to log a query of which the consultant refused and said cell c sent me a message so that's it. I explaned that it 2 contracts with fixed amounts not open lines(straight up top ups), she still refused and said she won't logg a query. Most of questions asked she had to place me on hold to go ask some one numerous times, no clue at all even she has the system to tell my account. She insist that's how it it and must accept the fact that I was debited wrong amounts with attittude which is annoying. When I asked her about the recorded phone call- jehova lack of knowledge from her. I pay for my services and expect value for my money-this ridiculous and pathetic service must be changed and sort out my billing.