Indeed Persimmon are well-known for building poor quality homes and then failing miserably to provide anything that resembles Customer Service. Perhaps this would explain why they are one of just three house builders to be rated only three stars by their own customers in the HBF Customer Satisfaction Survey and why they won only 8 NHBC Quality Awards last year (Barratt site managers won 89!)
As you have found out they just don't care. From their un-contactable by e mail CEO Jeff Fairburn, whom you should write and post a stern letter, right down to the site managers and their trades.
You will have a warranty, but I expect it isn't from the NHBC. Why you might ask?
One theory being that apparently, the NHBC were finding and reporting too many defects and breaches of the NHBC standards.
You probably have an LABC warranty, so you should make a claim if Persimmon fail to fix your defective new home.
It might be a good idea to have the home inspected by a professional snagging company.
I say "might" because you and anyone buying a new home (especially from Persimmon) should have it independently inspected and snagged
BEFORE they Legally Complete. That way they can delay the purchase until the home is as good as it should be. The house builder will want their money and have an incentive to fix the faults.
In your case now, it will just highlight to you how bad your new home is and you still have no certainty that Persimmon will put all of the defects right.
The reason the "Head of Customer Services" (he is probably the only "Customer Services" person at that office!) needed to come out and personally see the problems is to assess the likely cause, who was to blame and what needed to be done, by which trades. All of which is perfectly reasonable. It is also a good idea to have personal contact with their customers - again a good thing!
Trying to fob you off wasn't - shame on you Persimmon Homes!
If you want to take Persimmon to court contact Geoff Peters at
www.wingrovelaw.co.uk He is based in Yorkshire, handy for Persimmons corporate head office in Fulford Yorks!