After more than 2 hours on the phone to Thomson they stated according to their data base there are no construction activities at Cayo Levantado. When told of the pictures posted on tripadvisor they told me they would have to wait for the hotel to contact them.
One lady told me that it was just a painting exercise, which I responded to, do they paint with diggers in the Dominicon Republic.
Finally they informed me that if any building work is started a letter would be sent to Thomson shop where I had booked the holiday and they would contact me.
What a load of bo××××ks!