Poor customer service

Bought a tombstone worth R70000.00 for R40000.00 on black Friday promotion they had on 26/11/21. They promised to deliver within six weeks and that never happened. Bear in mind that we paid cash, and we didn't worry after 6 weeks that the tombstone wasn't erected because our unveiling was for the 09/04/22. On the 96/04/22 I called Sifiso and he told me not to worry, it will be erected on the 08/04/22. On the 8th, nothing happened and we had to postpone the unveiling to the 16/04/22. We left from Limpopo to Centurion on 09/04/22 & we found that they were still busy making the tombstone. We had to wait until they finished to make sure that they finish it and load it. We paid for the picture to be engraved on the tombstone, and that never materialized. Sifiso said he will bring the picture on Monday the 11/04/22 & he never came as per promised. There's another part shich was supposed to bd marble and Sifiso said was an import, they used a different part and different colors from shat we originally chose. We are completely not happy with the service and we want our money back we got poor quality of the tombstone, and we spent money for free unveiling of the 9th April 2022. Though we postponed, many people still come because they never got the message on time. We had to depend money to give those people lunch. This is the most pathetic service I have ever encountered in my entire life. Should we have relaxed znd believed his word; we'd still be waiting up until today. He never even bothered. to call us back regarding the picture