You should wait no longer than between 30 to 60 minutes.
I would expect an average response time of 1-4 hours for most companies, depending on the nature of the ticket.
The response time greatly depends on the nature of the ticket,but in spite of all facts the customer should always get at least a notification that the problem is being investigated.
With hostgator it is normally around 5hours
Didn't you just start another thread and state you haven't tried them yet?