Terrible customer service

I went there 11 august. Between 10-10.30 At steers Walmer park. Asked cashier to give me a serviette and was told I have to buy something in order to get a serviette because they pay for their serviettes etc... I ask her as well what if I did buy here? Because I had an icevream here she still refused to give me a serviette. So I ask her can she please give me 1 serviette. My hands was dirty and so was my face. She refused to give me a serviete. I can't believe that I got bad service.