I agree with you, you should get a response.. unless your membership has expired and you no longer qualify for support. are you using the latest version of sonar platinum ? Sorry I had to ask I didn't see it in the post.
they also could have looked at your support ticket and figured it may be a hardware issue and not related to sonar. Because its kind of a tricky situation here. its not like your saying "Hey the FX bin isn't working. It has to do with external gear so it could be related to your control, hardware ,exc.
At any rate, I agree, support needs to pick up a bit. but there might be a reason why you haven't heard back.
the biggest one: are you using the latest version ? do you qualify for support ?
It is imperative that you leave a good description of your version of Sonar because if not, we are all playing the guessing game.
Support for sonar X3 was discontinued over a year ago. so if you are trying to get support for that, they wont even bother.