i have read questions about repairing hairline fractures in bathroom vanities, and it seems like a common thing.
i purchased a bathroom vanity from bunning in 2015, (cadenza model) and about 4 years later small hairline fractures appeared, so i contacted bunnings who did not contact the supplier but left it up to me, and all i got from the supplier was every excuse under sun as it was not faulty.
They blamed the plumber not installing correctly, they blamed someone putting weight, etc, etc.
I gave up, as i was not getting anywhere with them, then covid came and we could not do anything about it has i needed a plumber to come and instal it.
There solution was to purchase a new one.
I'm not sure but think the warranty , was for 10 years, and if so my vanity would still be under warranty, but bunnings need to help me.
I'm writing as more cracks are appearing, and i have read other comments, like mine, being addressed by bunnings as they would
get onto the supplier to sought it out.
I never got that help, bunnings did not want to know about.