R500 limit on account placed without my permission

It is now 19 May 2015 and as far as my complaint regarding the billing on my account and the limit placed on it, no one has till this point called me, investigated my original complaint or taken the time to communicate with e what has transpired on my mobile contract. The latest I do know is that the contract has been terminated as indicated by Telkom's call centre agents (this was not even communicated to me) and I now receive calles and sms's from debt collecting company indicating to me that I owe Telkom as I did not honour my account payments. A sms I received today indicates that \you in default with Telkom Mobile