Sonic Drive-In complaint: poor service at drive thru and and incorrect cost

ordered rt 44 cherry vanilla dr pepper and gave total at speaker of 3 dollars and sixty cents. the time was 3:15 PM so it was happy hour and I and very aware of this because I walk each day and after I treat myself at one of your establishments to a drink. In my areas the costs are usually between 1dollar and 70 cents to 1 dollar and 80 cents.. So when I got to the window I asked the guy happy hour price as he took my money which was a 5$ bill and closed the window with no response. when he returned the change I asked again and he said hold on and not to me but whoever he was talking to on his phone. I asked once again and his response was that that was with the discount and I told him I pay 1 dollar and 86 cents every time at the 321 location and he just shrugged and began to close the window again and I asked if they do not give complimentary mints any more and once again the response to someone else of hold on again and I asked again about the mints in which he shook his head in a no way and not kindly laughing. He did not give me a receipt there was no thank you or I’m sorry and no effort to check on or correct or the issue. This is surely the worst experience I have ever had at Sonic