Hello Sam my name is ***** ***** I will help you.
What is it you want to achieve?
Is that the only issue, the windows and that there is no EPC?
I can't change your email address you need to log into your account and do this.
Only if you consider this to be a fundamental contract then you can leave without penalty. But it needs to be so serious that it destroys all trust and confidence and goes to the very heart of the contract.
If it is then you can leave.
However given what you have said, I dont think this is enough, but if you are personally of the view it is a fundamental breach then you can leave without penalty.
But the longer you leave it, the harder it is to claim fundamental breach.
Can I clarify anything for you about this today please?