Bad Service

On the 1st June 2025 my wife had a emergency at home. There was a big water leak coming from under the sink. Not getting hold of me she contacted MiWay and they dispatched a RDT Plumbing. Due to the water leak it damaged the kitchen cupboard. I contacted my Home building insurance and they reguested a Invoice from RDT plumbing so they can complete the claim. Till now 19th of June 2025 I been getting the run around from the mentioned plumber to give me a invoice. I have contacted MiWay on the 18th June 2025 and was assured that the mentioned plumber will issue a invoice today the 19th but when I contacted them again I was again a run around. WHAT IS THE BIG PROBLEM OF GIVING THE INVOICE.