Solar Advice being let down and I'm desperate!

Solar Advice did a very large solar installation in my house (in Jhb) last year April. I am exceptionally happy with the system itself: well-priced, effective, neat. Solar Advice (Leon) themselves were superb (5 stars). However, Solar Advice is based in Cape Town, and they have a partner in Jhb, headed by Lenon. I’ve had a few teething issues, and dealing with Lenon (1 star) has been beyond frustrating; in fact, fully impossible. After struggling to get hold of him or his secretary (Mariska), when a time is set for his electrician to re-wire something, there is a no show. This happens almost every time (no exaggeration)! My geyser needs to be taken off the solar phase, and until this happens, the system can overload and blow (which has happened a few times in Winter). I’ve written emails to Solar Advice. I am desperate. I am frustrated. Solar Advice is being let down in Jhb as there is no after sales support ****erally nil!). I did not want to take to a public forum, but after months of requests, I have no choice. All I request is (i) that Lenon’s electrician (Mike) come to my house to take my geyser off the solar phase and (ii) a long-term solution for support that may be required in the future is set up.