Worst disgusting service

The worst disgusting service ever. I had to replace a cellphone due to its unsatisfactory condition. I read them their rules and the whole store changed and said it didn't apply to cellphones but why is it written on my cellphone receipt. They gave me their suppliers number to call him myself called "Johannes" who told me "you black people have a problem with everything" when I told him not to use that tone with me he told to get my legal person if im not satisfied.