Sai Service Station — Duping customer in the name of issues in the bike which was never there

I submitted my bajaj pulsar on 26/09/2021 at the service station located at phugewadi, Pune.
Milind Kardele as per true caller. His number is [protected]. He was the guy who was in charge of repairing my bike. They took in my bike with a job card mentioning there, back wheel bearing, shocker one side oil leakage, engine oil change, handle bar and T slightly lined out, change the clutch wire, polishing the bike, front disc pad change, timing chain minor sound.
Following were the work to be done. The manger named Mr Praveen rode my bike to check.
They however, today 27/09/2021 called me and said that the engine is blocked, clutch plate burnt, engine Mobil isn't there.
The bike is mine and I fill in 10000 kms engine oil, I daily at night take out my bike for a ride. And if the engine was down I would have known it.
Who gave them the right to open the engine? Where in this wasn't mentioned in the job card
Besides when I went inside to take a pic of my bike as in condition they were objecting. However I managed to take some.
This is totally a plan to dupe a customer off more money in the name of repairing which wasn't even needed. It could either be the employees themselves.
Please see the pics attached. There is no damage to the engine. If it was it would have been mentioned in the job card. They didnt.
Please resolve the issue.