Apple Watch series 6 on loop restart

Hello,

After locking my watch in water mode and going to the pool, a few hours after it started beeping and displaying "calling emergency service now". I couldn't unlock it in order to cancel it, i couldn't do

anything so i just took it off my wrist. When getting home i charged it for a few hours but since then i can't turn it on. I tried force restarting it but it just goes on a boot loop (displaying the logo after 10 sec but then disappearing).

At a local Apple authorized service provider i was told that they will only replace the watch entirely. If the watch is supposed to function at 50m water deep (and since i can't swim i wasn't even close to that number...) and i locked it into water mode before entering the pool, i don't understand why should i pay for a new watch?!

Did this happen to anyone? Did you find a way to fix it yourself?

Thank you