electric blanket

we bought an Russel Hobbs Queen Size electric blanket date code ***755 can not remember where we purchased it, also mislaid the slip I phone may numbers just to be told that they can not help me must phone another number last number I spoke to a lady she said they can not help me, I must take it to the shop I bought even after I told her that I lost the slip and I can not remember which shop I bought the blanket I again told the lady the story she then proceeded to tell me sorry we can not help you.