Bests & Worsts Reviews from Amazon

Received a defective unit. It won't charge. The charger would turn green within a few minutes. I still charged it for the recommended 3 hours but nothing changed. The machine won't run for more than 15 secs. Contacted the Seller. They said it was a problem with the charger. They sent me a replacement but same issue. Returned. EDIT: (after 3 weeks) Apart from returning the unit through Amazon, I had also contacted the customer service of Renpho regarding the issue. They sent me new unit (free of charge) and I have been using the unit for the past three weeks without any complaints. The new unit works as advertised and even though the initial defective unit was an inconvenience, I am pleased with the level of customer support that I received from RENPHO. Changing my initial star rating from 1 to 4. (not a 5 star 'coz of the initial inconvenience)