MTN worst service

If I Could rate them zero stars I woud. The absolute worst service I’ve ever experienced.I will never recommend Mtn to anybody as a matter of fact I woud discourage anyone wanting any service from Mtn . I upgraded two phones in the middle of jan and on the first day (Friday) of reviving them the one phone was factory faulty and dit not work correctly I contacted them and they said that I have to take the phone to them all the way to Pretoria (pease note that they did deliver them as that is one of their serves ) so I took it to them (monday)and told them I would like a new phone as this phone is faulty and I’ve only had it for 3 days . Where they said it wil have to go for a warranty acesment before they can exchange it for me I said that it is fine I waited a week and a half where I had to call 2 to 4 times a day as they had no feedback on what was happening with them not answering most of my calls I get the phone back as they tell me that the warranty acesment did not show any faults (and that if there is a problem again they wil exchange it for me as a complaint has been lodged)with the phone and as soon as I get the phone up and running the phone is still doing the same I phone them explaining to them that the problem was still there ( only to find out that they never sent it for a warranty acesment and only updated the phone and an update takes a half an hour not a week and a half ) they came to collect the phone that I am still waiting for (today 01-02-22) without any feedback whatsoever (they are probably busy updating it ) last night when I go in to my banking app I see that that Mtn deducted R3100 from my bank accout (please note that this is R2000 more than the contract for both of the phones together this morning when I contact them to get the problem resolved no one can tel me how this happened or where the problem is not our sales person or the account person I’ve told them I need this money in my account as I have debit orders that is going off where they said that this problem can only be resolved in 24 h time I told them that that’s unacceptable as I never agreed or signed for that amount to debit and i need that for my debit orders they said they will get back to me within a few minutes it’s been two hours now with them still ignoring my calls.