Royal Enfield — vibration sound from the engine

This complaint is pertaining to my royal enfield lagoon blue motor cycle bearing reg no: kl o1 cf 6953. It was given for maintenance last month for the complaint that vibration sound is coming from the engine. It was kept in the service centre for a month and they told that the oil pump and right side engine cover is replaced with new one and the defect is rectified. The maintenance was done in the marikkar service centre, panavila, trivandrum. But unfortunately, the same sound is coming from the engine. The bike has run only 1550 kms and its really ridiculous that such issues are coming up for a brand new bike. It is requested to rectify the defect at the earliest, failing which i will be forced to initiate legal actions against you. My email id is [protected]@gmail.com and contact no: is [protected].
Expecting a swift reply at the earliest from your end.