Booked premium pitch, only to be given on arrival the smallest pitch for our motorhome, picnic bench

Booked premium pitch, only to be given on arrival the smallest pitch for our motorhome, picnic bench we had to be proped up with bricks to make it level. The next day the people next to us with a small caravan and car left, we informed the reception that we were moving pitch, which they were happy for us to do. Not what you would expect when we had given our motorhome dimensions on booking 7 months ago.
There was building work going on, no laundry room, toilet facilities for swimming pool. Was not told when booking that there would been drilling, banging from 7.30am till 7 pm every day incl. Saturday and Sunday. Dust was everywhere, the site should not have been open until work finished. Very disappointing for first stay with Sandaya.