POOR SERVICE!!!!! Drive through

We gave our order clearly, Modiegi even repeated what we said & we confirmed yes the large: 2 x Double Quarter Pounder with Cheese Meal + 2 x Coke Zero with no ice. <br> When we paid (next window), we told her the amount doesn't sound right, & repeated what we ordered, she confirmed it to be correct. When she gave us the slip, it was for medium something burger, we said to her this cant be correct, we ordered (see above)? She again repeated that it is correct. At the next window, Dorothy handed our order to us, i opened the box & showed her this is not correct. Dorothy's was not in the mood & just wanted to get rid of us, we gave it back & repeated our order, she again gave us the incorrect order. We told Dorothy we are not going accept this, we want the correct order, we will pay in the diff if that is the case. Very irritated she called the lady who took our order. Modiegi arrived we told her what we ordered, she said ok she will credit it. She changed it & again it was incorrect (we paid the diff). The cars was piling up, she asked us to park, they will bring it to us, as it is now in the back of the queue (basically all the cars behind us are now actually in front of us) brief expl