First off all, make sure your talking bout your GW1 account and not your GW2 account. What I'm saying now is bout a GW1 account. on GW2 (possibly cause its new and fresh) Arenanet and NCsoft have a more strcter policy.
You are responsible for what happens on your account. Even when it gets hacked. So if someone hacked your account and used it e.g. to advertise as a goldseller, then the account will get banned. This may sounds harsh on first glance but then again if your banned so is the hacker/evil person.
Support however will take into account that if your hacked that you are not personally responsable. Normally they can see that from point x in time logging in has been from a different computer and that it is the moment the bad things started. So they can use that information to check your claim of being hacked. When it is clear that you are indeed not responsable they normally restore your account, give you access again and in most cases they can even provide a roll back that restores it to the state previous of being hacked.
So long answer short. All you can do is wait for support to come back to you. Keep in mind they have a new game out and are dealing with a higher workload then regular so it might take them longer then the usual 3 days.