Parasound service problems

I bought a used Parasound JC3+ phono preamplifier online from HiFi Buys, which is an official Parasound dealer, for over $ 2,200.  Within 6 months one channel quit working.  Since there is no warranty with it, I contacted Parasound service through the website email asking for the information to send it to them for repair at whatever price they charge, rather than sending it to the seller.  I thought that Parasound would be more reliable.  I have literally 20 messages with someone by the name of Phil Jackson at the service department and he still has not been able to provide me with that information.  I am really concerned with the quality of service of this company. 
In the interim I have noticed that the sound on my other Parasound device, a 10 month old $2,900 Halo Integrated Amplifier purchased new has interferences when 2 input sources are on at the same time even though only one can be selected.  I also mentioned this to the service person, but he has not even addressed it on his reply.  Is this normal?
I am certainly done with Parasound.