Hero Motocorp — Bike not running properly

Address:

600091

Hi, this is balamurugan from chennai, i bought new splendor i smart last month from vishnu motors, after first service my bike is not running properly and millage also low after first service. (before service 65kmpl/ltr).
problem: while running my bike strucking and running then strucking, i went showroom for this problem but not yet solved, i am unsatisfied for this kind of srvice
bike no:TN 22 DE 0952
mobile no:[protected]