Bad service experience

The service I experienced with multi choice, I have been offered a new decoder from on air tv which I received as per agreement, but now the problem is getting the decoder registered with dstv I have spent R 300 Airtime on calls between on air tv and dstv and the matter still hasn’t been solved. I am currently sitting with the decoder that is not registered and I my channels are not working there is no link between on air tv and dstv so people should decline those offers as it’s a struggle to get those decoders registered with multi choice.