Complained

I was collecting glassware promotion at pnpay woodmead. I was accussed of *****ing glass promotion stamps. Is it how you guys run yr glass promotions. I always buy at pnp pay woodmead as I work in the same center. they have never asked me why I buy from them but when I collect glassware I'm accused as a ***** who *****s stamps (I don't know how) Manager named Evalt makaba accussed me of *****ing stamps in front of other customers inside the pnp hyper. What if some one took a picture posted me in social media that I ***** stamps at pnp.. Um not happy at all, this is so bad to be accused of *****ing stamps. How can I trust such a big brand which treats customers the way I was treated. I don't know or maybe it's becoz of my colour or what! You guys need to explain this to me in detail.