Billed more than what i should be paying

I'm really disappointed as to how Rain treat their client me being one of them. They are continuously failing to resolve my issue which has been going on for months now, since from May 2020 to be exact. Firstly it was to remove the 5G billing on my statement which they have to do so ever since and even now 2 weeks has passed since i have logged a complain on they site and no one has responded to me. few months back i spoke to one of their support agents who also like everyone else promised that my issue will be resolved permanently and advised that they will come and collect they 5G Router and once that has been done they will then refund me with my R699. Another issue now is they have billed me more than i should be paying, my package is the 24\7 plan which is R479 and they have billed me more than that and i need my refund back..