MTN deducting Twice in a month

Good day Hello Peter

I have another problem with MTN. They double deducted from my account. They deducted money on the 31st of July (R1080) and on the 17th of August they deducted R1 100. And on the 20th of August I gave them a call regarding the double deduction. Letting them know that they deducted twice and that I had saved the money they took in my FNB account for areas(bank charges) so now they took the money and when the bank want to take money and finds no money they are going to be more charges. So the person I spoke was a lad named Pam. She told me that she will lodge a complaint and that within 48 hours they will respond. She also gave me a reference number of my complaint which is *** and said that if I want to lodge a complaint somewhere I should give them this reference number. So I waited from Tuesday and now more than 4 days has gone by and haven’t received anything. No response from them nor my refund. I am getting worried that they might take my money again at the end of the month for the contract, it is really bothering me. They are not working with integrity

Please help me get my refund and that they should not take money from my account whenever they feel like it

Thank you.