bad service bad advice on products/packages

Upgraded my contract and taken out new package.Tried to get something similar to the old one and was told it has been changed..<br> Taken out a new contract that the airtime /data package finishes withinthe first few days on first month and the second month within 2 days there after i cannot physically top up or buy more airtime on my own.. my accounts for the first month was close to R 1000 and second month was R800 , but my contract amont was R350... I tried to contact the newcastle branch where i too out the contract to cancell but could not get thru. tried the head officer and poor responce, tried other branches but also failed to get held..I was told that i cannot cancell the contract but i may change it after 3 months.