Over charging me and no way to prove it

Please be aware! Cell C is over charging people and allocating data usage that was not even used. It shows on the statements but we did not use the data. There must be something wrong internally with their systems. <br> <br> Don't get Cell C contracts!!!!!<br> <br> I will cancell mine asap!<br> <br> For 3 months now they overcharged me. The best part is that since 3 months ago I installed ADSL with Wi-Fi at home.<br> <br> I'm very disgusted with Cell C. Will not use or recommend them.