Babyhuh - Fiaper size mentioned are not correct according to weight

I ordered babyhug advanved diaper size was Large(*-** kg). And my son's weight is nearly *.*kg at the time of the order. But the size was too small and that was so uncomfortable for my baby and obviously it was not holding much pee at all and as it was an non returnable item, I used it. But for proof I keep some of it. I use this diaper for several months, but after opening the packet I realized it's manufacturing defect. It was actually the same size as size Medium. Pls look forward to this.