BAD AFTER SERVICE

I had a problem with my inverter and battery. After many painful months it was determined that their technician did not use the correct settings to set my batter. The technician before him lost the cable. I still have no cable. Mustek' technician had to come and sort out their mess. But during this time, I suspect my battery got damaged because of all the errors. But why would they acknowledge that this might be the cause. It only charges upto 30%. This morning, I received feedback on a mail dated a month ago it is unreasonable to request a new battery. But I am the one stuck with a batter that only holds 30% power. This company is only out for their own interests. You can send emails, phone calls, whatsapps. They will always find a reason why the fault is yours and not their incompetence. They made money out of my *********** insurance company, and I am still stuck with an issue that is not resolved. If you send them mails daily it was a problem. If you send them a mail a month after the last email you sent it is also a problem. Whenever an insurance company wants to use this company, please request another supplier.