I purchased oxtail yesterday attempted cooking it today it was rotten , my whole kitchen was smelling that rotten meat and has been in the fridge since yesterday

I purchased oxtail yesterday attempted cooking it today it was rotten , my whole kitchen was smelling that rotten meat and has been in the fridge since yesterday . I am really tired with this kind of experience with Pic n Pay . At first it was cheese then frozen veggies now this ? I have thrown away it .