Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Lexmark does not honor their rebate offers

I purchased a Lexmark printer. One of the deciding factors is there was a rebate offer if I purchased an ink cartridge at the same time. To make a long story short, I sent the rebate in well in advance of the deadline, almost 2 months after the deadline I got a letter stating I had to send the proof-of-purchase (which I had sent and they returned it to me. It is the original, full p-o-p with part of the box cardboard still attached. I returned everything back to them. 2 months later, I get my unopened envelope sent back to me with a stamp stating "Return to Sender - Offer Expired"As far as I'm concerned, Lexmark is a scam and I don't know how great their printers are, I will NEVER purchase anything from them again. It may seem like a piddly thing, but how many people have they done this too? Is this how they handle repairs and customer service? I don't trust them. I will not be replacing the cartridges in my printer, I'd rather buy a new printer.