I will never shop there again!!!!

I ordered a swimsuit from Superbalist.com, on delivery I could see the cup size would be way to small and logged a return. I did not try the item on as the cup size was obviously too small. All hygiene stickers are intact. Firstly, they told met that no returns on swimsuits will be done, as per their return policy, which I think is total ****, because how will you ever know if the sizes are correct, and I feel each return should be evaluated on a case-to-case basis, seeing as the item is in the state I received it. Then the service consultant informed me that the item could not be returned as it was a final sale item. When I purchased the item it was not on sale!!!! I cannot believe that a company as big as Superbalist.com provides such poor client service!