Patanjali Ayurved — edible coconut oil

I had purchased a 200 gms jar of "edible coconut oil" from the patanjali mega store. The mfg date was 30/03/2017 and it was best before 15 months. But after some time, it became rancid. I had informed the company's customer care division on 14/12/2017 and also sent various reminders. All they do is say that their team is working hard to resolve the problem.