Hero Motocorp — Complaint Regarding Oil leakage at Super Splendor BS6 2020 Model

This complaint is regarding oil leakage at the engine in my Super splendor BS6 2020 model (Vehicle Reg No. GJ17BR4157 Chassis No.MBLAW171L5K80146) i had visited the service centre two times for this issue and had changed the gasket two times but it doesn't shown any result (attached photos for reference) and also there is an issue regarding losing of acceleration between a ride and while changing the gear, it is also a major issue which was from the beginning of purchase i thought it would be solved during the services but the result remained same, i had also mentioned this during last services but they had adjusted in the clutch setting and after 3 days it again started. I got saved from an accident because of loss of acceleration during the gear shift at traffic signal its a major loss in safety of this bike.