Got both my orders wrong, 1st they had my burgers ...

Got both my orders wrong, 1st they had my burgers all wrong, and missed a 10pc nugget that I had to pay for, 2nd time was earlier 20 mins ago, they give me my card back with no receipt and forget another 10pc nugget again, and I call them they say theres nothing they could do if I dont have a receipt, BUT ITS THEIR FAULT THEY DIDNT GIVE ME A RECEIPT. I shouldve known something was up. The people that work there are just sad. Is it that hard to read a ticket?