Are they too big to care?

I signed a Telkom-Mix contract on 29 May 2015. I have the following problems:<br> 1. Calls from my landline to mobile are being billed (for two months) - this was supposed to be a benefit of this contract.<br> 2. I am supposed to be receiving 1 GB of 'All-Network' data. For the past three months I have been allocated 100 MB per month.<br> 3. My ADSL service data, since signing the contract, runs out after less than two weeks.<br> 4. I paid up my account in full at the end of July. Despite no monies being owed to them, Telkom ran a debit order on the paid-up account and it bounced. I was charged R180,53 for this 'rejected' debit order.<br> <br> Four visits to the Telkom stores, many calls to the Call Centre, reporting it on their 'Escalate Complaints' page, two recorded disputes on their MyTelkomServices site, contacting their 8ta mobile chat service, have all resulted in one phone call from them assuring me that the matter 'was being attended to' and two reference numbers: ***9 and 308332. After three months of communications and visits I have had no luck. My only option, albeit an expensive one for me, would be early termination of the contract.