Bathroom business fails to refund after no delivery of goods

I went into their shop to buy a bath and fittings and I paid cash R2000 used a debit card to add R2070 totalling R4070. This happened on the 23 July 2018 . I was promised that the products would be delivered on Wednesday the following week. There was no delivery on the promised date and I phoned to cancel the sale and bought at Bathroom Bizzar because I was now being told they are waiting for an order from Cape Town. I could not wait as I nended to have this fitted for my wife's birthday on the Thursday after the delivery. The fitters came and they charged me a callout fee for the job they could not do. I have been given a run around by Bathroom Boyz for the refund until today even after they promised to refund me