Give me back my money!

I'm disgusted in the service received on the 25th April I advised Telkom my bank details have changed and provided them new bank details they advised me my debit for April is still outstanding 205 Dear Telkom Mobile Customer. Your balance for account number *** is R205.I told them to connect me with collections to make a force debit order they said they can't do a debit order I must do manual payment I struggled and made contact with them in the 1st week of May on the 8th the payment was received by them done and dusted. Next best thing I receive notice Telkom debited my account 612.20 ? when i called the agent told me that's their sister company that took the money which doesn't make sense cause I'm up to date they must refund me. Today the agent is telling me a different story she says I will not get my money 612 back they can only refund the 205 how does robbing PEOPLE in this fashion make any sense. I HAVE LOST all respect for Telkom I never knew this is how they treat their clients. I want my R612 back into my account you had no right to take my money no one gave you permission to debit me on the 13th not even the 25th May on the 13th I mean really and you call this service the agents all **** to me saying I can't make an arrangement!Telkom can't debit me! lies lies lies because they knew they scheme to debit 612 that's *****ing Give me back my money! FROM CHRISTAL