I have a leak coming in through the roof. I called a roofer last Thursday to come and have a look. He said it could be some mortar that needs re-doing or it could be due to a small gap that he found.
He decided it was best to start with filling in the small gap to see if that was the issue (using no-nonsense roof silicone, so nothing expensive). We agreed on a price of £100 to be paid via Bank transfer. He sent me his bank details a few hours later, but that same evening, it started raining and the leak was still present.
I didn't pay him but messaged him the following morning to let him know that the leak is still present and if I could get a quote for having the mortar re-done in that area, as that was the other thing that the roofer thought might be causing the leak. He said he can re-do the mortar in March, but won't give me a quote for it (or a definite date) and keeps messaging me asking for the £100 for filling in a gap, which didn't even fix the leak!
AIBU to not pay him the £100?