The next time you have a problem, try the troubleshooting tips listed on the FAQ page. Carefully document the steps you take. That way, if a support call becomes necessary, at least you'll have a good idea of what isn't causing the problem.
If the tips we have listed haven't solved your problem, it may be time to contact us. At a minimum, you'll be able to help us narrow down the problem by describing the troubleshooting steps you've already taken on your own.