NO JOY IN CANCELLING SERVICE AFTER A FAULT WITH CO

Why can I not close my account/contract? I have been told that Autopage made a mistake when my phone was previously upgraded and I was not informed to phone to stop my TopUp account becoming an Open one. Suddenly I am receiving accounts way over what I budgeted for. To reverse this situation seems to be beyond Autopage's ability - just as is a civil manner from some of your agents. Suddenly the agents claim that we are under paying as if it is our fault! Who makes the account? We have phoned several times and have visited Autopage in Midrand and even Bethlehem, but NO JOY in rectifying our account, OR receiving a specified account, OR receiving a copy of my contract, and I can go on and on. NOW HOW DO I CLOSE THIS ACCOUNT? Will Autopage re-emburse me for the monies paid over and above the initial TopUp contract? On 7 September the phone in question was ****** and the number blacklisted. We have in the mean time claimed and received a new phone through insurance, BUT WE HAVE NOT USED THE PHONE SINCE 7 SEPTEMBER. Now why do we receive accounts for an account we have tried several times to close? Please advise us with FULL details as to how to close the account. Specified account!!!