I sold a toy nearly a month ago, and before sending, as I stated in the listing, I put brand new batteries in it and fully tested all the functions. It was working then as it always had. I packed it well - lots of bubble wrap, strong box etc. Most of the cost was postage as quite large item. Buyer just emailed to say one of the functions is not working. If this is true, it has either happened in the post or in the 3.5 weeks they have had it before telling me! I do not want bad feedback - have 100% atm - so do they - but not sure what I should do. Any opinions/advice welcome. Certainly don't want to "diddle" anyone!! Neither do I want to be a "mug!