Off burgers

I bought burgers at Steers Monument Krugersdorp, all the burgers smelt and tasted like fish, that was beef burgers, this is unexceptable, whats in those burgers? Is it old? Is something put in it?? I will never ever support steers again. The prices are sky high and then you have to deal with this ****, if me or my family gets sick, there will be hell to pay!!!!