Honda 2 Wheelers India — the services i have been given which i didn't asked for and the bill raised

Address:

Bellary, Karnataka, 583123

Sir, i had given my 2 wheeler for service at bellary (Nandi honda), karnataka, india on 13th nov'17. I has asked only for 4 complaints: 1. Vibration problem, 2. Right side indicator change, 3. Left shock absorber fork oil leakage and 4. And general service only. For these 4 things, they have added so many parts and made the bill to approx. Rs. 4700.
They have changed the parts, that is ok, but why didn't they asked me before replacing so many parts? And how can they replace parts without my concern. They have changed engine oil, spark plug, etc.. Which were not required unnecessarily. My biggest question is "why didn't they called me before replacing or changing these parts?'" i would have denied them for doing the same. Please take appropriate action against these activities which are being performed at your service centres.