Not my experience, I have sent things back and then realised I have missed out a cable or a manual later, no one ever said anything. I also know from my work in logistics they literally have container loads of returns. Perhaps your item was more expensive and warranted a check or you were just unlucky and got a jobsworth.
I have also never had them argue with me, usually their customer service refund with no questions asked. In fact I would say their customer service is around the best out there. 100% they issue the refunds within minutes of the royal mail received scan as well, before it even reachs the depot.
If they robbed me of 55 quid like that I would order a 60 quid item and say it never arrived and ask for a refund as it arrived too late, an extra fiver for the inconvience. That or I would argue the toss with them and phone them up and go nuts (or get the wife to
)
I am honest, but expect shops to be as well.
That said ; Every thread ever regarding customer service has different opinions based on your own experience I guess. Many people hate virgin media, but I've never had an issue with them in 25 years. For me I refuse to deal with Sky, Renualt or Vodafone, but just as many have had good experience with them. I guess it depends who you deal with on the day.
I literally sent back 3 pc psus in a row once, that was the item that I missed the cables out of. The first one went bang, and next one was sparking, the third worked but had an awful burning smell. The final one was an asus and has worked like a dream. All refunded and returned no problems at all. As it was for my son's pc I refused to accept anything less than perfect, as I didn't want it blowing up in his room. The wife would never forgive that. She still remembers things I did 15 years ago, apparently.