Vodacom at it's worst for service

I was phoned for an upgrade last year July. Upgrade was for an iPhone 8. It took almost 3 months for the phone to be delivered. Then I discovered the phone was a refurbished phone. There were problems with the battery as well as the speaker. I reported the issue, and so it was organized to be collected within the 7-day period.

We asked that we want to stay on our "old" plan and we were not interested in a new phone or a plan.

During April I was phoned again because Vodacom wanted to sell me a new data deal, with that, we discovered that I was still paying a higher amount on my monthly fees for the new phone (that we returned) as well as insurance. That was then "corrected" on our account, and we were supposed to be credited. A month later, end June, I received a message that my account was over R4000. I went to Vodacom, and they told me that I should ignore the "Toby" message and someone was trying to ****** some money from us. Well, needless to say, on 1 June, that amount was deducted directly from my bank account. We went back to Vodacom, they said that R3800 was a once-off deduction for the iPhone 8 (which we returned) Since then it has been a struggle to get our money back. We asked for a direct payment back into our account. After about 2 weeks we were told that they credited that amount to our account. We highlighted the fact we do not want that amount credited from our account but want the money they owe us, to be paid into our account. Then, after another week, they asked us for Proof of Payment. The Bank statement was sent, and this is now another week and a half, without any feedback from Vodacom. Only another referral with a new "case number" will be "inspected". No answer, No money.... We do not receive any Invoices from Vodacom. After many occasions, the address was changed, and we asked them rather email it to us. Guess what, no statements from Vodacom. During our telephonic "questionnaire" I was asked how I receive my invoices. I mentioned that we don't receive invoices from Vodacom, they then simply cut my call.