Tata Power Solar — Solar not working

Address:

Sheela sadan, Monippally P.O, Kerala.686636.

I have installed an on-grid solar panel 3kb 0n 2018 by unique energy kottayam. This is the 8th time it has not working properly. First 3 times the engineer said the problem with the earthing and it was changed last three times. But this time the engineer said it is the problem with invertor. They have changed invertor couple of times. However, the system is not working as it should be. Then the engineer came 4 months before and installed new model invertor. Now it is not working again. Complaint reported 5 days ago. No one come and check it. I need to find the exact reason behind all these problem. I believe the products are not meeting the quality. So i'm very disappointed with this. I would like you to consider this and please do the needful as early as possible.
My contact details: [protected]@gmail.com.
phone number: [protected].