Royal Enfield — issue from first day in royal enfield 350 classic

Address:

Block A1/336, Uttam Nagar Hastsal Road, New Delhi, 110059

First day issue with classic 350. Engine starting trouble and miss fire on highways. As per dealer comment problem resolve after 1 service but same problem still pending. I faced issue date of purchase and only 10 days ago purchase.
We recived bike after run 20 km.
Please help for supporting with resolved issue.

Thanks
Sanjeev ahlawat
[protected]
Delhi, new delhi.