This thing is junk - Hatsan TactAir Spark Portable PCP Compressor

I got this compressor I thought it was a good deal ! I used it two times to top of two of my air guns and it worked fine ! I got it out today to fill a new gun I just got and the temp Gage won't work and it won't pump any air at all ! Its only got 20 minutes on the unit ! And it won't work !! I emailed and called Hatsan but no one will email me back or pick up the phone ! I've left message after message and they don't even have the common courtesy to return a phone call ! Have they ever heard of customer service ???