Over charging and Poor Service

We were charged R2600.00 to install a smart TV in place of our old TV. Two men were here for half an hour. We were not shown how to use the new tv, one told us only the password was necessary for Netflix. This is not the case as we can't even get to the stage where a password is required. Having spent nearly two hours on the phone with MultiChoice to access Showmax, they tell me that the TV hasn't been installed properly. We have spoken to Shadreck who seems to be the owner, and Prince who refuses to come back to rectify the problem unless we pay them more money. Prince was most unpleasant on the phone. We have decided to pay another company to correct their shoddy workmanship. Interesting, I have tried to google this company, which is how I found them, but now I don't see them listed at all.