over charging!!!

Im still having problems with cellc!!! Since today i didnt get any help from them like i asked!<br> 1) I asked them to change my contract which i didnt asked for from day one. <br> 2) I get R50 of airtime a month to phone and still my bill is sky high which they cant even tell me why! And then my phone gets blocked.<br> 3) I paid them money because i have to guess what the right amount is, the invoice does not correspond with the people over the phone when i phone in, and they cant tell my why. When i phoned in to ask them were can i send my proof of payment, the could not give me any details.