Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Disappointed

I have generally used Panasonic phones with good results. This one has a few problems. Most annoying is the phones lose connectivity with the base at least weekly necessitating that I power it down and unplug the phone line. Next, is the volume is to low many times. I use a headset with it and that is another problem. It works fine with my other phones but for some reason I can't use voice when navigating an IVR voice prompt instead having to use the keys to enter data.