Sometimes it is more practical, and a lot less hassle not to insist on your rights.
I can imagine protracted weeks of going back and forth with the supplier, but a quick phone call or email to Abbot normally solves it in one go, with a replacement mailed directly to you.
I had a broken vacuum cleaner once, still under guarantee. John Lewis said to me, look, we could arrange to collect it, inspect it, refund you if that is appropriate, then you can buy a new one….but if we give you the number of the manufacture, we know they are very good at sending out a replacement with no quibbles, and it’ll be quicker and easier, if you are prepared to phone them, and you’ll have your new cleaner from them next day delivery. So that’s what I did, (with the proviso that I could go back to JL customer services if I encountered problems).