Anchor roofing...don't touch them

I initially gave this company an excellent review. However, after paying over 30k...10 weeks later it began to leak in exactly the same place as before plus where it had never leaked. I called him ten weeks ago and was told he was ill. However this looks like a one man band because no one could come and look. Yesterday I actually spoke to the owner Dave and when he found out it was not new work but a complaint, he out the phone down and will not answer. I got a roofing expert in today and he said no work had been done on the roof but it had just been painted. This was only a quarter of the roof. I have looked at the reviews and it would appear that since his son left , his work is has gone downhill, so obviously we know how the good reviews cane about and it wasn't Dave This is ***** and I will now sue him.