Solar Installation gone wrong.

I had a solar system fitted by this company. I spent in access of R80 000 and now the system is not working correctly. He did a good job with the installation, however as this is a one man business, after sale service is really bad. The owner is always upset if he has to come out to fix a problem on his installations or to assist with a problem on his installation / system. He is very sarcastic and abrupt. During the warranty period he is invoicing you to come out to rectify problems with his equipment and installation. This is unacceptable as these problems should be rectified under warranty and should be done at their cost. I am really struggling with this company / person and now have a system that cost me R80 000 and is not functioning as it should.