Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Energizer It Ain't-Worx My Foot

Don't believe the infomercial. Product combo shipment arrived and the new lithium battery was a dud. Almost impossible to reach customer service by phone(online help is a joke) and emails are answered in about a week. They did ship another replacement battery with R/A for the old one after 3 emails. The replacement lithium along with the extra lithium battery (purchased a just in case one) both lasted for one charge and now are both duds. Tried to determine if charger is the problem with no response from customer service. After two months just frustrated and neighbors are looking at my yard thinking we must have moved.Sadly, the trimmers work well when you can use them. Fix the battery problem before I get a citation.