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Thank you furrypusscat for all your help it is much appreciated. I did contact Trading Standards who told me the retailers were within there rights to offer a like for like replacement, but that we also had rights to say we wanted a refund, they just told me to put everything in writing to the retailer which I already had done. We contacted the credit card people who sent us out forms to complete which we did and sent all other relevent documents with it. They have now said the same that the retailer is well within there rights to offer a replacement and are passing on our information to there investigation team, so hopefully we will hear from them soon. I will let you know what happens next and thanks again furrypusscatl