I’m very frustrated and ONAIR TV has very POOR customer services!

I was called by OnAir Tv employee for a DSTV decoder where I would pay R279. I agreed and they delivered the decoder, only to find out that there’s an additional amount of R224 for OnAir Premium Lifestyle that I was not aware of nor did I consent to it. Now for the past 3 months they have been deducting R503 from my bank account. I have been emailing and calling ( no picks up until my airtime runs out) to no avail. I would get calls from their agents and when I would ask about this, one hung up on me and another gave me contact numbers and told me I could cancel the premium Lifestyle and only pay for the decoder, which is what I want. The company doesn’t even explain that if you have DSTV, the package you pay for and their decoder are separate things, you are told by DSTV when you’re switching the decoder to theirs! Anyway, I want to cancel PREMIUM LIFESTYLE and only pay for the R279 decoder that I had agreed on.!