20 Year Big Mac celebration for R19,95

They advertise on the radio abtt their 20 years special. Get a Big Mac med meal for R19.95. We had been waiting at the Bruma branch for 2 hrs in our car. Finally get 2 place our order & the lady says oh no we need ur coupons otherwise you pay normal price and says people were handing out coupons outside.there was No communication about coupons on the radio and worse still no communication at the drive thru que which went around the block. Never tried to get access unfairly waiting in the que properly. Then not to play the racial favour card the car infront of us got coupons & the car behind us also had coupons after hearing this when I wanted to place an order I asked the people infront & behind & they had coupons. Both cars had coupons us not. So must have gotten it by their friends or something. Entered the same area & us being White & Coloured get no coupons and others do... answer me how in the same line without people coming to your car you see no exchange of coupons u get no comm about coupons.Not even had any communication from the McDonalds staff walking around outside with clown coloured wigs, and red, purple coloured 20 years birthday shirts abt coupons.SO DISAPPOINTED!