MANAGER RUDE AND IGNORES YOU

I bought 5 big bacon king steers burgers and all 5 were raw, I mean like red, blood dripping raw, which was disgusting for me and my family so I went back to the store to get new ones because we won't be happy if one of us ends up with food poisoning. When Showed the Manager she agreed it was raw and said she will exchange it for 5 new burgers. But then she said that I had to ask for it to be medium done. I told her that it wash unacceptable, I have never been asked or seen on the menu that you have to ask how your BURGER patties has to be done. After I told her this she started to ignore me and with her back turned on me and if I asked her to look at me as I'm complaining she would say in a cheeky way do you want your money or your burger back and i should wait i started to lose it, I mean i embarrassed myself in front of a lot of people because this lady thinks she can talk to a CUSTOMER like she pleases I'm starting to think Steers don't care about their customers at all. I also asked her what her name is and what is Steers head office's nr, she never gave it to me. I don't think I will ever go back to steers at all in the future.