Unfair treatment

I was offended by this McDonalds in Phuthaditjhaba, Free State. I often come here while doing my school work. I buy breakfast, then lunch, sometimes I eat lunch with my wife during those times.

Then boom, while I came yesterday, I bought my breakfast and continued with my work. The manager asks me to buy a meal every 2 hours to stay at their restaurant. What amazes me is that, it was not even full. I do not think this is good way to treat a customer who comes in and support the business.