Instruct: Classify a given Amazon review into positive or negative sentiment.
Query: Serious Recharging Problems and no support

The product was wonderful for the first 3 months and the recharging socket broke. I could not get any support from their website, and had to dig throughout their site to get the phone support. They told me that the backpack was out of warranty. So I bought an 32MB expansion backpack. It was really cool at first, extra 32MB of space and it charged fine. Then 2 months later it quit charging. I called support 6 times. Twice they had no record of my calls, and I had to get 2 RMA numbers. They have been out of stock for 7 weeks now. No status. Impossible support techs that provide no help. Their email service doesn't respond but once every 10 days and it's of no help.