I dunno. I had a home stocked with IKEA, and now have a lab full of cabinets (several types, over 50 units in total). This has survived one said lab relocation between buildings, in a truck. No breakages. The only problem was with one (out of 100+) drawer cabinet's bottom that fell through when we loaded it with HEAVY metal parts, but I fully understand these cabinets were not designed to handle this load. I have fixed it in half an hour usung a bracket from another IKEA drawer, anyway.
I don't know what you folks do with furniture. In normal use, IKEA is durable enough and well-designed. It looks flimsy but in my experience is more durable than many other heavier-looking pieces of furniture.
In any case, if something breaks in normal use, email IKEA. They have a customer service that works. At the very least they can mail you broken parts.