TUI miss sellinG

Ive booked a holiday staying at a hotel we have stayed in in the past. Decided to return as the area and hotel suited our needs as traveling with a young adult with special needs. Have since found out hotel is being completely refurbished and being modernised. TUi are denying this is happening told me to cal Holiday change line for information ( have been trying for 10 days)

vacationexpress.com
tuigroup.compress-releases/2018/2018-01-15-riu-presents-its-new-brand-image
states it is closing for refurb

I am concerned as no one will inform me of the extent of the refurbishment and when it will be complete, what happens if its not completed when we go, going from 2 to 4 pools tells me its going to be a complete change.
The hotel had a traditional feel and lots of vegetation which we loved.
Where do we stand as we have booked this on the grounds it was going to be as advertised. I know some people would be happy with a shiny new looking hotel but when travelling with someone who does not handle change well (Autism) this could have a terrible effect on our holiday and i wish to be prepared. They have told me i can change my hotel at my expense.