Guild Wars 2

I’m military and currently deployed. I won’t be able to play on my character for over 6 months. Does ArenaNet delete characters after a certain length of inactivity? If so, is there any way to flag my account so it does not?

I haven’t tried to buy gems in a few weeks but tried this weekend using multiple methods with no success. I tried 2 different credit cards and my paypal. The ticket number is 120908-008204