Update from refund from @kathmandu_live
/Following my post yesterday the online customer service team from Kathmandu contacted me to offer some assistance. After a few phone calls they asked for some photos of the issue. Provided. Then another call. Essentially ‘while the designers can't find a fault, you are obviously not happy, so we are going to refund you’. Which was what I wanted the store to say.
So it appears we are now at a conclusion.