poor services misleading ads

I saw an buy one get one free promo today and I placed an order at McDonalds Hamilton street in Pretoria, but the uber driver only delivered one meal claiming that the doesn't know anything about the special I showed him he took an picture of my screen , I also emailed uber and they responded that I must click on the HELP key that is so useless cause no one contacted me I am very disappointed this is not the first time that I have encountered this using uber eats my order number #7D1A9 they are misleading us with false adverti*****ts. I am very disappointed like I said its not the fist time I am complaining about UberEats cause they advertised this so wrong of you and the number on your web doesn't work poor service for someone who makes use of your services so often I must say I am highly disappointed