Breach of contract / arrangement and bad attitude to add

I have been a customer of Brandon's Pool Care (BPC) for more than 20 years. I recently requested a service and was advised that the filter housing needed replacement. On at least 4 separate occasions, I advised BPC of the day and range of time that the work could be completed. BPC insisted on payment upfront (R4,500+). BPC did not arrive. I phoned to speak to Kevin (the long-time owner). He simply fails to respond with no explanation. This was teh same experience with the last service about two years ago. Beware - this company / business is not reliable and not willing to rtake responsibility. Now to get my money returned!!!