We have had several problems with this p.o.s. POS ...

We have had several problems with this p.o.s. POS system for a while now. I've contacted several people already but I keep getting the run around. We are at a dead end now and are stuck with this junk equipment. The people (higher up) in management don't answer our calls but they sure were quick when we were ready to buy. Zero stars
EDIT: I replied to the email and got NO response. Not surprised at all.