Unable to stop payment following end of contract

I can confirm a gentleman by the name of Phumlani called us yesterday, he assured me everything was sorted my cancellation confirmed and the refund of the undue deduction made from my account will be refunded to me. He promised to follow up with an email. However this morning the email was still not received and after another long and costly call to the call center I was informed by a lady named Rachel that my account is still active and both cars still covered under Tracker with no indication of my cancelation submitted in email in Jan or the correspondence promised by Phumlani could be found. So how do you suggest we proceed now?

I acknowledge receipt of the correspondence and attachment. However, please note that the credit note with ref no SCD***, only reflects an amount of R1 077.96 will be refunded to me whereas an amount of R1 299.35 was deducted from my account. What happened to the balance of R221.39?

And according to the second attachment - a tax invoice with reference number SIN*** - I now owe Tracker R60 for the Naedo debit order fees for a transaction that was made against my account without my consent more than 3 months after I terminated my contract???? Please clarify and rectify this urgently.