[Resolved]  Zoom Car — unfair charges and mental harassment

I had booked one Zoomcar on 13 July, 2018. I had to return it on 14 July 12 Pm which i had extended to 1 Pm by paying extra amount. I completed my trip on 14 July, 2018 at 12:20Pm which is reflected in my Zoomcar App. But i started receiving messages stating please return your zoomcar to avoid penalty. I tried to contact them through their customer care number but call is not connecting. I had filed multiple complaints through their app regarding the same issue for which i received automatic replies in my spam inbox. Then i received a messages at 11:39Pm(14 July, 2018) stating your booking is completed, please pay outstanding amount of 5498. Last week i tried multiple times to contact them but due to their poor customer care services, not able to do so.
Yesterday(21/07/2018), i received a call from Zoom car for paying the outstanding amount of 5498 and i explained the whole situation to her, to which she replied that she will look into the matter.
Today i received a legal notice stating please pay outstanding amount within 5 days to prevent any proceedings.
I am attaching the screenshots of my app and my google location at 12:15Pm on 14 July 2018 which clearly shows i am present at drop location at 12:15Pm.
I do not know what to do now, since i am not able to contact them. That is why i take this issue here.
Thank You,
Regards,
Nikhil Sharma
[protected]