XCover.com & RentalCover.com review: Travel insurance

Purchased XCover.com Travel Insurance through Booking.com, (27 Sept 2023) to cover a round trip flight ticket. They were supposed to send me the insurance documents, insurance booking reference, and certificate needed for me to submit a claim. They didn't.

I've filled their contact form three times, asking for the documents, but they always reply with the same automated email: "please send us your insurance booking reference. This is the number that ends with "-INS" that can be found in the subject line of your confirmation email. We need this because we couldn’t find your booking in our system using just your name and email address."

I cannot send that information because they never provided it.

There is no online chat nor telephone number. I've been reading here in this forum and on reddit and seems that's the way they operate (scam): always sending automated emails requiring more info/documents.

Booking provides no way no contact or manage the insurance either, except from "go to their webpage". Total rip-off, don't know how this type of scam is legal and why would booking work with these scammers.