Burger King complaint: drive thru

Yesterday I went through the drive thru and ordered a 1 with no pickle no onion and 2 8 pc. nuggets. I seen the promo on the screen that said 2 for 10. I then said can I change that to the 2 for 10. She said You want me to change all that I already just put up there. I said yes sorry I didn’t know you had to start over, but I then said both the same no pickle no onion med. with coke and powerade. I said can you add cheese, and she blew air in mic. she said is that all and I said yes was nice and said I’m sorry about that, I could hear the people laughing inside. Got to the window and said can I add a large diet dr. pepper she said no, I cant add on at the window. I then said cant I speak to your manager, she said oh you want the manager. I said yes. The manager and her stood at the window like I did something wrong, they both acted like I was a bother to them. The manager came said you want a manager I said yes. she said what do you need I said I just wanted to add a diet dr.pepper. I then said am I not suppose to add it here if I forgot, she said if we are busy, I was only car there. I didn’t tell her about the order taker because I feel she had the same attitude as order taker. I’m sorry ,but you will be losing business with these attitudes. I went at about 2pm 10-07-2021 order69