521 Tab packed up after just 3 months

Hello, I have had my 521 now for around 3 months, it has been kept in its box on my "Mod Desk" at home and only ever come out when i wanted to use it, yesterday It has now packed up, it reads ohms even without an Attomiser on it, battery is charged fresh, it had been getting "dodgy" with its readings for a little while now....I have asked my retailer here in the UK (T.J.'s e cigs) and the response was - I dont think we have any in stcok at the moment. IMO the lack os spring loaded 510 is causing a lot od issues withe these, i have 2 x friends that have had theirs break after a short period of time too...help please!

Thanks, Tony