MANUAL PAYMENT MADE BUT STILL DEBITED

Telkom debits my account on the 20th of every month but for some reason did not debit my account on the 20th of May 15 , I phoned Telkom twice to find out why they have not debited my account but was advised by both consultants to make a manual payment I eventually made the manual payment on the 22 May 15 but was debited again on the 23rd May 15 I than phoned the call centre again and spoke to Miss Cele on the 27th May 15 and advised her that I would like a refund , she advised that the debit order does not show on their system and that I must send her proof. I emailed the proof to her email address on the same day and she advised that she will log it for a refund by 29 May 15 I still did not get any feedback so I decided to phone again and this time spoke to Vezile and she advised that nothing has been done and no refund has been logged I asked to speak to a manager was holding for about 15 min and Vezile advised that the manager is busy on another call and that she will give me a call back. I phoned at 10:00 and it's now 12:05 and still no call back from the manager and still no refund or feedback from Telkom, I WOULD LIKE MY ACCOUNT REFUNDED WITH MY MONEY !!!