Furious with MTN

I am furious! I contacted MTN for a 5G router. They assured me that we have coverage in our area. After the router was delivered, it turned out that we do not have coverage.

On the same day, I went to an MTN store to cancel the contract. I was told I would receive a refund of R780. Also, I have now noticed they deducted another R420 for a debit order — for a service I am not even using, as I do not even have a router anymore.

The call centre keeps transferring me from one department to another without resolving the issue. Who can I speak to in order to arrange a refund of R780 plus the R420 debit order?

Please advise.