am I a thieve???????

So as I'm looking for a gift for my son in crazy store I see the staff looking at me the hole time but I couldn't care so after I got to check out and spend over a R1000.00 I see a staff member walk in with a gentleman and then he goes to the door.so after paying I walk and get forced stoped by the guy asking what's under my shirt I rep**** it's non of your business and I was not allowed to leave the shop so I showed him (I carry a concealed weapon on me) I was allowed to leave..it's pathetic because why couldn't a staff member just ask me sorry sir what have you got there and I would of told them but instead they run and call security and make a scene... OK WILL NEVER SHOP AT ERMELO CRAZY STORE IN MY LIFE AGAIN AND THATS FOR SURE...