Unhappy, irrate almost client...I never want anything to do with Onair again

I received a call from an agent by the name of Nushka about two weeks ago selling me an Explora 3 deal. She explained the deal included 2x explora 3 decoders at a monthly cost of R238. This sounded super good but I was concerned this was too good to be true and asked her, numerous times, is this included the DSTV bouquet (i.e. compact plus) we currently were on, she confirmed this was the case. She also mentioned the deal included free installation and everything. The delivery of the decoders was supposed to have taken place a few days after the call, this only happened almost a week later. Then the installation was only done today i.e. 10th April. My husband was home when the installation happened so everything was confirmed with hi (he's actually the DSTV account holder but I make the monthly payments). On my return he let me know there were channels that were not playing which were previously playing. I then called DSTV to find out how much I'd be paying as my husband also let me know the installer had called to have insurance included for the 2x decoders. To my shock DSTV let me know I'd still be paying the normal R508 for the compact plus bouquet, and the R238 for the new decoders. I was super angry and seriously confused as the agent that sold me the deal has confirmed the R238 was for everything. I then proceeded to call onair (in a very very furious state) and was unfortunately put through to someone that didn't help much as the call cut just as my husband was talking to the agent. I called on air again and this tie was put through to someone by the name of Sam. He was talking super slow and didn't really sound like he cared to help much . I let him know what happened and requested he pull the calls with Nushka (she spoke to both myself and my husband and confirmed the price of R238 to be for everything). This Sam character took my statement and said that they'd only be able to get the recording within 72hrs. He also said that there was nothing that can be done until they listen to the tapes. As mentioned the reality is not what I was sold and I therefore do not want the 2x explora 3 decors. I unfortunately only found out what the true story is after installation which is really not my fault. Both myself and my husband don't take kindly to the fact that Onair employs people that lie to get sales and we really hope to never have anything to do with this company again. Based on the above I really hope that someone who is honesty and of sound moral values can review this together with the call recordings so that these decoders can be returned and the stupid 2year contract be cancelled. We seriously want nothing more to do with a company that employees such dishonest individuals.