Option to link previous account to new account via FACEBOOK

HI, i'm sure that a lot of people are also having trouble with this. So far, the game has the option to link via google+ only. The problem is, not all people has a google+ account! And it really hurts a lot when a player, say, needed to reformat his phone and when he re-downloaded clash of clans, with all his patience went through the tutorial once more, and then happily taps on the "connect with facebook" button only to find that it says that it is "already linked with another game", and even asks "link it to current game instead?". Can you please please please add another option like, "transfer your base here" or "link your old game here" or ANYTHING that could get us our old base back? PLEASE! It is really a pity for having playing for such a long time and overranking all of your friends because of that hard work to make this game a success and THEN just because of a reformatting of a phone of whatever THEN the player can't get back to work on his old base anymore! PLEASE DO ADD AN OPTION TO LINK FACEBOOK ACCOUNT OLD GAME TO A NEW GAME!