Eagle Inn Accommodation, sea view Durban

What can one do any Advise would be great.

i book accommodation via lekkeslaap in February 2022 for December 2022. i have made it clear what unit i want and paid the deposit in February already. 2 days ago i received an email saying that i can not be accommodated in the main house unit as this is not suitable for my famliy? I've paid for this accommodation, i received a breakdown of payment confirming the unit i will be taking and also confirming payment. And only now i receive an email telling me they can not accommodate me i should take the smaller unit as they want to accommodate larger family? that has nothing to do with me as i already paid for my stay. i am absolutely beyond upset as i have already paid for a few things that my family and i will be doing that side and now we are technically being put out of our accommodation with no choice what so ever and being placed in a unit that is small. i am disgusted with all of this .