Bad Attitude at Clearwater branch

I would like to complain about the appalling service I received at Clearwater yesterday. I returned items to the store, unfortunately I had misplaced my slip but all the tags with prices were still on the items. When getting to the till the two cashiers Caroline and Dikeledi told me that the price on their system was lower than the price on the tag and refused to give me a credit at the price on the tag. There were no smiles, when I complained that I thought it was unfair that they would not give me the credit at the correct amount I got bad attitude and I was told I have no evidence. They continued to talk under their breath to each other and refused to give me slips for the items I exchanged. When I demanded that I get a copy Dikeledi took herself off in a huff to go to a different to make a copy. I am shocked at the awful service that I had to endure at this store and will not return there!!