DO NOT GET MTN CONTRACTS

Last year November I had 2 contracts up for renewal. I upgraded 1 of the contracts to a special MTN was running with a Samsung Z Flip 3 for R269.00 per month. I cancelled my other contract as well as the cellphone insurance I had. They came to deliver the phone, and it was a Samsung A54, not what I ordered so I sent it back with the courier company. A week later I received the correct phone, a Samsung Z Flip 3, and though nothing else of it. Then I received my Invoice, what a shocker. None of my contracts have changed except that now there is a Samsung A54 on the Invoice at a price of R473.73. And the cellphone insurance is still there. Now I am supposed to be billed R269.00 and the Invoice is for R1104.18. I have since dealt with their support, legal, ***** and complaints department. Support can do nothing for me as the contract was telephonically agreed to by one of their 3rd party providers, so I need to contact them to sort it out. Legal ignores me, Complaints department has a guy Mike that rep**** once in January and once in April stating they reversed the upgrade on an incorrect number, yet nothing changed, and I am still being billed incorrectly with a phone I never had. ***** said it is not their problem because I did agree to a contract, even if it was not this one and I need to contact the 3rd party provider. I keep telling them that I get debited by MTN, my network is MTN, I agreed to the contract with MTN. I am not being billed by their 3rd party provider and therefore it is not my responsibility to fix their issues. I have a contract with MTN, and I expect them to resolve this. Now they try to debit my account twice in a month for amounts that I did not agree to and should not be debited at all. I am paying the contract I agreed to from another account via EFT every month. My second number has been completely disconnected because of this, a number I've had for 20 years. A year down the line and no one at MTN is willing to resolve this matter, yet they are now tarnishing my credit record because of they refuse to fix their problems. I have requested multiple times for the recordings where I agreed to this amount, I get ignored on that as well. I do not know where to turn anymore as they are unwilling to assist, hope this will at least persuade someone to stay away from MTN and save themselves the frustration that I've had to endure.