Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Amazon shipping "ABC" knockoff batteries instead of official APC!

We ordered 2 of these APC batteries. We received 1 APC, and another one from a company called "ABC" that looks like a cheap knock-off.I couldn't believe Amazon was shipping a knockoff after we purchased the original. So I requested a replacement. They apologized and sent one out.We received it, and guess what, it's another ABC battery! I complained again, and this time the guy admits if he orders another replacement, it'll probably happen again, so he's just going to give us a refund!WTF, why doesn't someone at Amazon ask themselves why they are shipping knock-off products as real products? If I was APC, I would be pissed.