Can I get my promo slot back?

Hi, I just played a game, where my team's statistics were: AFK: 1 Intentional feeders: 2 Trollpick: 1 (He practically confessed it in matchmaking.)

I wanted to send a message to the Riot support, but the system just sent me to the Boards, so I'll hope a rioter sees this. It wouldn't be such a deal if it was one of the rankeds, but since I'm in my promo and I already won one of my games, this is a HUGE let down, because in scenario like this I can't do anything and it does completely not have anything to do with my skill. Not only that now I have only one chance to succeed, but I'm also metally demotivated and the defeat in next game may prolong my journey by too much time - not that it would be bad itself, but the principle is what matters mainly. I don't even ask for the players to be punished, I ask one simple thing: Could I please get this promo slot back?

I added the game recorded so everyone can see I'm not lying.

Dear regards Sexy Bisex Plant