McDonald's Selby poor service.

I just left McDonald's restaurant in Selby I have never seen such attitude and disrespect from the female supervisor and the cashier. Wanted to order via my app they told me I can't order mind you I redeemed already and my 2min expired while we were bickering in the store in front of other customers. What is wrong with your cashier's and supervisors?. Never in my life been so disrespected.