Skullcandy Hesh 2 bluetooth doesn't start, solutions?

I own SkullCandy Hesh 2, it has only been a year since i bought these headphones. The cable part works perfectly but the bluetooth part doesn’t work at all. whenever i try to switch on bluetooth either it just blinks blue light once or not at all.it charges for about 5 mins and then the red charging indication light just wents off.