Sonic Drive-In

I purchased a 4 piece mozzarella cheese sticks with marinara sauce and a art cup of ice. I noticed the male server on duty wiped his nose as he was delivering an order to another customer.
Tonia, another server had completed a delivery so I requested she bring my order instead of the guy. I explained my reasoning to her and she said ok. Tonia then went back inside, communicated my concern and request to the male server and another person on duty. The sad part about this is that they had hovered over my order, and too, they laughed at my request.
Tonia brought my order out, but I told her to keep it and I would register a complaint. She was insistent that I had paid for the order and should take it. No thank you, just give me my receipts; she did. I didn't trust the process because of their actions and trusted my instinct. Ever again, will I patron this Sonic location.