Feeling ****med by OVHD and Blingstallation

I bought an OVHD decoder and also purchased a R650 Blingstallation voucher from Makro (the voucher was only free for an hour installation). I had to call them to arrange for a technician to do the installation on Sat, 21 Sept, as they didn't return my call to confirm. The Blingstallation technician was unfriendly and indifferent and after fiddling around for 45 min, said the decoder was faulty and that he couldn't help me and that I'd need to return the decoder and replace it with another. He proceeded to take the installation voucher and I questioned that, as he hadn't finished the installation. He said unfortunately I'd need to take it up with the OVHD call centre or Makro. After much wrangling with the call centre, I replaced the decoder at Makro, but there still aren't any channels, even though the technician said it would just be a matter of plugging everything in. According to the call centre, I now need to pay an additional R450 for a technician to give me a tutorial. I said that the cost should be borne by OVHD or Makro as I was sold a defective decoder and that the installation was not complete. I'm still awaiting the umpteenth call from the OVHD call centre. They seem very quick to pass the buck and their after sales service is virtually non-existent. I'm very disappointed and at this point, would just like to return everything as this experience was an annoying exercise in time-wasting.