Debit order not processed, Vodacom blames bank (R82 000 indirect cost to me)

My account was not debited in July, I was charged a penalty by vodacom. The first consultant said that the error was insufficient funds, I then proved to Vodacom that there was enough funds available and have not heard anything from them regarding their error. I called again today to see what the issue was (spoke to Bernellee Swartz), Who now says that the issue was with the bank as the error message that she is getting is that my account is closed, I tried explaining that i have numerous debits that were going off this account and there is no way that this account was closed, my salary was paid into this account on Friday (25th). She insisted that the error is with the bank and i need to take it up with them, I tried explaining that i have had this conversation with Vodacom on 3 or 4 previous occasions, I made sure that they have the correct banking details and yet she still insisted that i take it up with my bank. I ended the call and called FNB immediately, they conformed that all is in order with my account and provided a letter indicating same. The missed debit that Vodacom cannot explain which is certain to happen with my next debit as well has resulted in a judgement on my credit score, This has resulted in my bond rate being increased by 0.9%, That equates to R 400 per month over the remainder of the term (207 months), That equates to R 82 000 that i will be paying as a result of the incompetence of Vodacom. I would like to know how Vodacom will be rectifying this, I demand that this issue be address immediately and resolved in a manner that is pleasing to myself. If there is no resolution, I will be forced to seek legal advise based on the following: 1. Vodacom staff confirmed on numerous occasions that my account details were captured correctly and that the debit will be processed on dates given to myself and my bank. 2. Vodacom staff stated that the missed debit was as a result of insufficient funds in my account, I then proved that funds were available and nothing was resolved. 3. Vodacom staff then stated that the error was with my bank, even though i explained that i have about debits going off my account and all was in order except the Vodacom debit. 4. My credit score was previously clean, The missed debit has resulted in that being tarnished and costing me at R 82 000 due to my increased interest rate.

Could someone at Vodacom please urgently explain how they plan on resolving this mess, i.e. Fixing my credit score and appealing to my bank to review my rate due to incompetence.