Worse Service Ever....

On the 25th July 2024 I took a month to month contract with MTN LTE for R499, they asked me pay pro -rate and for August month, which I paid R 611, on the same day. They only delivered the device on the 31st July in the afternoon. The device was working until they switched it off 13 days after using it. I enquired same day and I was told that I didn't make the payment for August and I now owe R1000. I provided the complaint department the proof of payment, and they still allocating the payment till today and on the other hand I'm getting billed for Service that I didn't get. Worse experience I have ever come across, I just need my money back, I would never encourage anyone to choose MTN. Searching for a better service somewhere, what a waist of money and headache.