Unreliable company Total fake !!!

Unreliable company Total fake !!!
Unreliable company , I've been using them for years! But NOT any more.
I called them saying that I'm going to build the extension, they gave me a green light and took all my builder insurance. When we started our extension , and suddenly they've decided to cancel my home insurance
So now they are acting unlawful, cancelling my policy without any reason or advice. Just because they don't want Take any responsibility
So For years they were taking my money and give me Policy and when it came to Real test they run from the responsibility didn't even refund my money for the whole year I wish it will happen to them in a middle of the work With no insurance!
I'm seeking legal advice towards them.
Don't used it total fake!!!