E48-32 DSTV error on selected channels, DSTV does not help a client

I have been a DSTV client for over twenty years, but as the years progress, the service declines.

I signed up for price-lock and got a new Explora Ultra with a new dish, LNB and cables installed, all arranged by DSTV. This was less than a year ago. The past two weeks, I noticed that channel 106, 107, 210, 161 and 194 are not working and have the error e48-32. I have tried the FB option, Whatsapp option, app option and contacting the call centre, but to date, it is still not resolved.

I read many complaints of people that got price lock with the new ultra decoded with this exact problem. My issue is why does DSTV not honor their warranty and get the same installed out that they initially sent to me, to rectify this under warranty? I am not prepared to pay if the installed that DSTV sent me was not qualified to do this install and with the install being so fresh and Im still in the price lock contract, DSTV must foot the bill for this as its a comeback job. Why dont I get a credit if so many of my channels are not working?

If this is not resolved by Sunday, I will cancel my DSTV