ON AIR TV SERVICE SUCKS!!!

Im disgusted by services or should I say lack of services I received from OnAir tv since i took their contract in December 2019 for an explorer. They delivered a faulty decoder, they tried replacing it with a downgrade, I returned both machines and was told another one will be dispatched, im still waiting weeks later, then they have the audacity to debit my account for services I dint have. I asked a copy of my contract with them or recording, none was provided, Spoke to Warren on several occasions he rudely hang up the phone on me, spoke to Sumeshan and Sandile as well the service is just ***. My e-mails were never rep**** to since 9 Jan 2020. I am now on the verge of involving National Consumer Commission.