Left us without water, Unresolved Issue with Mains Trip and Lack of Support

I am writing to express my frustration and dissatisfaction with the service I have received regarding a home assistance issue that has yet to be resolved. This morning, I had a lovely hot shower, and moments later, my mains tripped. I contacted the Auto & General assist line for help. Initially, I was told I would be transferred to register a claim, but I clarified that I needed immediate home assistance due to the mains tripping and that there is nothing to claim yet.

An electrician was called out, and after about three hours, he determined that a plumber was needed because a specific part he could not fix. The electrician switched off our water supply, emptied our water and assured us that a plumber would arrive within 45 minutes. However, as of now, it is almost 4 PM, and no plumber has come. Instead, I received a message from the plumber asking if we would be available at 10 AM tomorrow.

We are now without water, unable to use the toilets, cook, or shower, and the parts that were meant to fix the issue have been left on the floor. The situation is worse than when I initially reached out for help. I am extremely disappointed with the lack of urgency I have experienced.

Please advise on how this can be resolved as soon as possible