Razer Hammerhead TW both ear pieces aren't working

I've received the earphones I bought as a gift, when I've sent it it turned out that both of ear pieces aren't working. the charging box is working because I have other pair which I tried on the box and it seemed to work fine, the problem as I've read is with the ear pieces themselves. They produce no sound at all is if they're completely dead; no "Powered On", no "Pairing" no nothing, I've tried all the possible solutions I found online like giving it a long press, three presses, three presses with a hold, and yet nothing seemed to work, I even placed the "misbehaving" pieces in the charging box closed and opened it a lot of times and nothing happened also. What should I do, even If the surprise was totally ruined I'd still like to have them work. Thanks