this is bull

i had 79 coupons , 1 away from the ak knife. i looked through my coupons just to gaze upon how many coupons i had and when i was done i tried to click cancel. instead i accidently clicked exchange. i figured it would say something like Please Choose your prize but instead it it said exchange successful. i looked into my storage and i had a mp5 adv 90 days and i lost 10 coupons. i didnt ****ing click on it and now im ****ing ****ed off beacuse i have a usless mp5 adv that i will never use and i now need 11 more coupons instead of 1 for my weapon. this is bulshyt