I had a bad customer...

I had a bad customer services treatment today,whereby one of the managers treated me like am thieve,bcs I pass the queue to pay by the next cigarettes till point of which I know that I will find prepaid unit, where's other till points are not loaded with airtyme, electricity it's only the one by cigarettes side,here comes manager,Henry shouting at me saying is theft when I asked him how is it theft,bcs am in the store and I never try even to attempt leaving food*****s exit,I wanted to pay for my food n buy coupon at onse, suddenly am accused of theft,so is it bcs am Black in colour or what bcs when they see a black person they see *****,They don't care about my reputation,imagine such bad and annoying customer service,am am even considering to take it further up