Vodacom *****s me over and i just have to sit like a duck and wait

My account was in arrears for a while and i made a large payment to settle everything. a day later they deducted that amount again leaving my bank account in the minus. I phoned and sent in the proof of payments for a refund and they state i have to wait 7 days. I explained that i can NOT wait 7 days as i settled my account already and after i settled the account they deducted more money that i do not have and tell me i need to wait 7 days when i need the money urgently as i already paid them what i owe them.

When we miss a payment as customers, they charge us more and more until we pay. Should that not also be the case? They took money i don't have and i promise you they will not pay me a single sent more plus i have to wait over a week for money i don't owe them nor have in my account.

Vodacom is utter ****, this is my first contract that i have with any phone company and i have to deal with this ****. Not the first time i have issues with them taking more than they should without notice.