Instruct: Classify Amazon reviews into positive or negative sentiment
Query: No replacement of a small part.

I purchased Channel Master's model 3000A about 2 1/2 yrs ago. It had been working O.K. until a worker accidentally damaged a small part (power supply and injector, model 3037) in January 2011. I saw this part for sale in Channel Master's website. When I tried to order it two weeks later, however, I could not see this item in the same website. I sent email to Channel Master for inquiry, but there was no reply. On Jan 21, 2011 I called Channel Master's client/distributor supp department, and they told me that model 3037 was not available but they would contact me should it become available. To date (March 1) they have not contacted me.The whole antenna (including the expensive job of setting it up and wiring) is useless without this small part.I would recommend this item only to those who are sure that they can keep every small part undamaged forever.