How many times do I let manufacturer replace doors ?

I did mu bathroom over last year and replaced everything with so called high end items instead of the chain store stuff.I paid 3 times as much for my bathroom sink cabinet then a home depot brand which I used to buy.Well after 5 months the paint/stain on the so called cherry wood started peeling off.I called the place I bought it fro mand they send out a rep from the manufacturer who agreed to replace the doors.Well another 7 months later same issue with peeling.I again call store and he said they( manufacturer) will send out another set of doors.That was 3 weeks ago and still no doors.I emailed store and said how many time do I need to go through this? I have to pay for a person to install them as well.He did not answer.I am wondering how many time do I need to let them fix this issue?