Gm's please read please help

i was getting crates in black market then i went into the exchange list and didnt see anything i liked but instead of pressing cancel i accidentally pressed exchange and i accidentally got mp5 adv 90 days. plz give me the 10 coupons back and take the 90 days off the mp5 adv on my account plz. i swear i dont even like that gun so plz help me cuz im going for ak gold and need all the coupons i could get