Telkom please credit my account now

Good day I am very disappointed by the way Telkom treated me,i have the cellphone contract with Telkom but last month they deducted the amount of R453.58 instead of R252.58. I called their call centre and i was promised that the issue will be sorted within 24 hours and i will receive the email from the supervisor by the name of Luthando but he never keep his promise. They even deducted their money in august but i do not know if they are willing to assist me or can i just remove my debit order from my bank. I want to know when am i going to get my credit and the confirmation that it has been credited to my account. Northgate Mall store could not even help me as the lady only advise me to call their call centre and i am also not pleased with their service. My Cell number: ********** 227 My ID Number: ********** 769083