Bp17 cube preamp

Hi,
i bought a Bryston bp27 3.  After about 2.5 weeks, I noticed a rather loud hum coming from my midrange drivers, in addition to a too loud hiss from the tweeter.  I have heard a bit of a hiss from tweeters but I've had to put my ear up to the grill to hear.  I called Vermont, and he said there is definitely a problem.

since it's so new (and expensive), I asked for a new one.  The employee I was communicating with went incommunicado.  No help.  Before I bought it, he was helpful.  Hmmmmm.  

I also offfered to take a b6 in place of the 17.  No answer again.  Incommunicado for the decision maker.  I offered to take the $700 hit in price difference.  Nothing.  Not reading my emails anymore I think.  I thought I was buying from a great company.  I sent it off for repair.

almost brand new (used very little), I think one of ,one of my options  should have been taken.  

VERY disappointed in this company.