Sorry to read this. What year is the watch as it may have Omega's 5 year warranty if 2018 onwards?
Also if not, Omega servicing isn't bad at all, if you wanted shot of it Omega would charge £590 to service that and you'll get all the paperwork plus warranty etc. I'm sure you'd then be able to recoup that £590 plus more on resale vs selling a broken watch. This is assuming it's a relatively recent watch.
If it's a 1st gen Planet Ocean then an independent could do it just fine.
Big shame as they are lovely watches but I appreciate the experience so far has probably ruined it for you.
My grail watch didn't live up to the dream before I even got it ... I wanted a Sub, was on the waiting list for 3 years or so then gave up ... couldn't be bothered with the various AD games ...
I have a Mark XX and an Explorer which both make great everyday watches so I don't need anything more ...