Double billed

I have been complaining about my double contract since may until today nobody helped me Multichoice billed me two Explora 3 payment plan 24months R49 and this put me under serious financial challenges and I have been complaining about this they send me form pillar to post instead of me paying R632 they add R49 for very same product I have and they said I have 2 decoders, I complained and am tired now I really need help please