I've had calls in the past where there has been an issue with the hotel and they were not taking guests.
One, which happened to be a Premier Inn, had already booked me into another one close by and asked first if that was okay?, then giving me the address of the new place so my journey was not interrupted.
The last thing I would need is to travel half way round the world and upon arrival at the hotel, find out that there is a problem. Much better fore-warned.
So there are good reasons for wanting genuine information from you. It's not all for marketing.