Bad service

I had a very bad service from porto in Acardia during my lunch time today. I will never ever go buy there. I was there to buy the usual meal, two cans of cold drink and the snacks. So I was holding everything by my hands so one can of coldrink fell and had a crack so I decided to go and exchange and get another one then I proceeded to pay and as I was paying the guy that stands at the door approached me and said I should also pay for the cracked can as well cause I am the one that dropped it then I told him I didn't drop it intentionally and since I am still in the shop I can exchange it and get another one. I then ask to speak to the manager, the manager came and she also said I must pay for the damaged one. Then I didn't agree with her then she told me she wont sell me the other items I bought. Imagine I had to leave a store empty handed.

What I am furious about is the security guy(he saw starring at me the whole time) , he saw that I am holding many things with my hands and I kept on dropping things, instead of bringing the basket, he was waiting for me to make a mistake.Please train your staff. What they did to me is not good for the business.