Sonic Drive-In

I went the Sonics and ordered a bacon toaster meal but when I received it the bread wasn't toasted and the bacon was a half of slice that covered the middle of the bread. I told the manager Tiffany that it wasn't done correctly and she said yes it was. I proceeded to ask for a refund and she kept the original receipt and told me she couldn't give me cash and I would see it back on gift card in 2-3 days. It's approaching a week now and she was very unprofessional in the manner she handled the situation. I went back because I wanted a copy of the original receipt and the receipt where she processed the refund. She had no care in the world when I told her I was going to contact corporate. The customer service is about 4 on a scale of 1-10.