Unhappy customer and bad customer service

I went on Facebook to read some comments of people experienced that the meat were off ,so i commented on one of the people's comments. I went to the butchery the day before yesterday and i wanted to go and buy veggies, the boss chased me away for giving my comment on Facebook about the staff and management, and he told me i will never come to his shop again, and I recently saw in the butchery that all of their meat are off and yellowish and green on the outside and I won't recommend customers to buy from them, we bought sosaties from R10 each and the next day I had stomach problems from the beef sosaties. I will never buy from them again since they have bad service and bad food.