B&Q porcelein black floor tiles600 by 600, HELP please.

[4baker]

We have had a new kitchen and12boxes of the black b&q floor tiles 600 by 600 fitted. What a night mare, we need 2 replace 3 of them wew have none left, there are none in any B&Q shops they have been withdrawn. Wehave now strippedthewax off andsealed them. Aswe all know the box tells us not to seal them so nowI have 3 tiles that are badly scuffed it wont come off. PLEASE HELP does any one have 3 tiles we could have please we will pay you for them.
Also any good tips on cleaning them.
Thanks a million to anyone who can help us.
JAYNE and DALE BAKER