I have unbounded my game and logged into another how can I get the unbound one back?

Mail support. Be prepared to tell them the following and send to them. Otherwise if you dont have or send you are shit out of luck. This is for android users.

1) battlefield number, name and cords of your accounts location

2) the Google games name (helps) but the gmail associated with the account

3) last and most importantly a screen shot of a purchess from that account.

Without those your pretty much ******. They can but may not want to help retrieve it for you, but stay on them, I've been through the process and have successfully gotten my accounts back.

Also if you haven't spent any money, they can also accept that, just tell them you ca not provide the screen shot because you have not spent any money on your account. They can be frustrating to deal with. Hope this help