Rude security guards

The fidelity security people at pnp Centurion are plain rude. They don't know to approach you on a matter. While shopping I decided to have fries and the security guy named Tumelo outright asked me if I'm gonna pay for them as if I had on option of not paying for it. Mind you by that time I'm Branded (wearing uniform as I work in the mall) and here I am actually being accused that I would not pay for what I eating... As if that was not enough today another security guy by the door said I must not ask his stupid questions I must just leave him to do his job. I don't know whether they don't have customer service or maybe they have not received proper training. Please kindly look in to as this is unacceptable as I work in the mall as I visit the store every day