Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Leaves a lot to be desired

The Skylink AD-433S dialer came with conflicting instructions, and despite three phone conversations with their tech department, we could not get this to dialer to work properly. I finally sent it back to their "repair" office, and it cost me an additinal $19.00 in postage. I still waiting for some response from the company.