Appalling service

I took out a contract online through call centre in April, The contract amount was R229 and I had to make payment of R98 as soon as the phone was received. May 31 was my first debit and it went through, however on the 3rd of June Telkom attempted to debit my account again and it declined. 25th of June I was successfully debited, July 22nd my account was locked , 25th July the debit orders did not go through and I Phoned into the call centre. I was advised that the agent who sold the contract made a mess and I had 2 accounts linked to me. The bill keeps pulling in a matter of weeks. The contract started from R229 to R239 and now its R448. I owe a total of R747 that I don't know about. I need this cancelled and fixed.