Your reply is at best disingenuous, but means nothing; you could not run a bath. You have had this emergency for more than two weeks. With my wife just out of hospital, with a new hip, we have had to take her to friends for a shower. You care nothing about your customers.
So an update of the next to nothing you have done since my last update 26th July 2022:
27th July Dawn phoned from the Nationwide complaints department, to see how things were going and was the shower sorted, I think she wished she had never asked.

27th A lady from CET phoned and said they were waiting on parts, I said rubbish they were on the shelf plumb centre Amazon. She said she would look into it and get her manager to call me.

1st August Gerna a manager phoned me to say they had arranged a plumber for the 4th August. I said it would have to be before 6am as we leave for our holiday at 6am on the 4th, which they had know since 26th July as I had told Thomas, and he said it would be fixed long before that. She said she would escalate it and come back to me.

I have heard NOTHING!!!!!!!!!!!!!!!!!