One and a half months and still unresolved!

On 30 May 2015 I changed my bank account to a cheque account. My bank rejected the debit order that was supposed to go off on 31 may 2015, because my bank was supposed to change the debit order details to my new account number, but they didn't. So on April 1 I phoned the telkom mobile call centre to ask what to do. The consultant (sunet williams) told me to make manual payment. I made manual payment on April 1. A few days later I received an sms saying that my line is locked due to non payment. I phoned again and they unlocked it. Then on April 15 I got an sms saying that my account has been debited with R698. I phoned the telkom mobile call centre again and the consultant told me to reverse the R698 at my bank , and then pay R349 manually again. So I paid R349 on April 1 and R349 on April 15. This would mean that my account should be up to date. This is not the case. I went back to my first email from sunet williams stating the reference number I need to use when making the manual payments- we realised it's the wrong one. I have phoned the call centre and spoken to managers md nothing happens. They just need to allocate my R698 to my correct account - but they won't do it!