My HBO MAX login doesn’t work

So I cancelled my wireless service with you all because it was the worst customer service experience I ever received both in store and via telephone. No resolve ever. Unfortunately, the same if for internet however I have no choice in internet. When cancelling wireless it cancelled my HBO however my HBO was also through my internet which I had prior to even having the wireless so it shouldn’t have cancelled my login. So now I haven’t had HBO for months and I tried calling and get the run around yet no solution STILL and it’s been months since I cancelled my wireless. I want my HBO back.