MTN SA M2M 5G Network are ****MERS😡😡

Mtn SA is a ****mer. I have paid R1934 for a M2M 5G router that I have only used for a month which barely has coverage. The subscription is R499 and I made an online purchase and paid R547, router was delivered and they claim they never allocated the initial payment, flagged my status as a bad payer with the bureau negatively impacting my rating. Submitted bank statement as proof of purchase and they say that the statement isn’t sufficient as proof is payment. I regret the day I chose with network as it has caused nothing but misery in my life. I’ve been calling for over 15 days still being told the issue is being escalated, this network is totally utter ******* 💯💯💯