bad burgers

Order burgers and the beef one just taste like salt and not like ground beef like one would expect for the price you pay. The chicken burger was one the other hand cold. Could have been grilled a bit more. I told management and they said they use a premix patty which is not ground beef and I refused to eat it. Funny thing is they just said they will talk to supplier and that's it. Yes and I paid for what? Just a whole plate and I ate one of the double burgers. Could have given a discount, not to worry I will never recommend that place to anyone.