Good, Bad and Ugly Customers. [Week 7 Question]

I havent really had any bad customers, Ive just had people that always asked me for free stuff. Its an everyday thing when people ask me for free stuff and my answer is always no. There was one time I had a customer that didnt believe I was selling the products at the right price and there was a little tention but other than that everything has gone smoothly. Since basically the only customers that come to Jittery Joes are my classmates that makes it easier to serve and talk to them rather than serving a complete stranger.