Hero Electric — NYX HS500 ER Bought recently 1week

I bought the vehicle through online process and was delivered to vizag from Srikakulam dealer . Several issues are raised in vehicle in first week itself.
1)One of the given charger is not
working from starting itself.
2)Back seat latch is not working from
the start.
3)Back break failure.
4)One of the battery stopped
working, was unable to charge that
battery.
5)Main stand entirely came out when
vehicle crossed over a speed breaker.
6)Accelerator is not working properly.
7)Other battery also stopped working,
now vehicle is not starting at all
8) Brought the vehicle to service center
through auto which costed me 1200
and now the service center is not
accepting to give service as it is not
bought at his shop.
Please solve all issues as soon as possible.