Suspended my service

Good day I am totally dissatisfied with the service received from dstv, I've paid my account up to date but they keep on disconnected my decoder, I've sent proof of payments since Sunday the 05th they sent me an email that they received my proof of payment but still disconnected my service, today proof of payments were sent again, why can't they just allocate my payments that are not showing on their system, I Am NOT a happy customer at all..