The point is he paid for works done, the work isn't up to standard and the party isn't willing and/or able to fix it, therefore he is entitled to his money back.
what if you was getting one side of the story and our OP was threatening over the phone and he blocked him because he doesn't want to be harassed and abused in such a way had them replaced once and when pedro received them the first time they had been damaged from incorrect installation?
just a thought.
3 sides to every story, 2 biased bullshit ones and the actually truth