Poor allround Service!!!

I have complained previously about upgrading to a new package and never receiving the benefit or the extras but most of the goods have now been supp**** but I still await my data to go up to 50gb. I'm also not happy with the quality of my internet service which have been going on for six months now. They phone, they send technicicians but my connectivity is still inconsistent, no solutions have been offered either. I'm paying for a 10mb line but that's not what I'm getting, it's very inconsistent. My modem resets when I get a incoming call. I'm at a point now when I'm only interested in a solution for this problem. Either a fiber line or LTE...please try to resolve this urgently because it impacts me very badly since I spend a lot of time on the Internet.