Royal Caribbean Cruises, Explorer of the Seas, Caribbean

i have found out from this site that RC have cancelled one of the islands travelling on april 5th, i have complained to thomas cook who i booked with and are arguing with me saying they never recieved any letters from RC, RC are saying sent them and have sent me a copy of it to prove it. Just want to know did anyone else book with thomas cook and if yes did they inform you of the change and when? regards lesley