Sorry to hear that. We had a problem with our solar inverter disconnecting because of over-voltage on the grid. All I could find on the generation side was a ‘general contact form’ on a website. I didn’t hold out much hope, but a couple of days later, an actual engineer called me to talk about moving the tap in the substation down, as there was so much solar generation in our area it was pushing the grid voltage up. He’d already sent someone out to check there was scope to move it and was calling to ask me to check for the next few days and to let him know. Not had any more problems since.

I’ve never been so pleasantly surprised by their level of customer service. My point is that it really depends on getting someone who (a) cares and (b) knows what they’re doing.