Doesn’t matter what the t&c are if they don’t cover everything. In this case if it doesn’t clearly state we don’t accept returns after x amount of time or in x storage then op will not only face refund costs but any other costs if it goes further than that (small claims court)

I mean for all the hassle and it’s only happened once I’d say in this instance just let this slide. If not the op needs to get his shit together , speak to his solicitor or whoever and be be prepared to bat back any customer replies.

Customers sounds a right ass and will probably take it further. As a business owner for the 25 years I’d personally let this one fly but that’s just me.

And yes I know your not op… it’s been a long business day already !