Hero Honda / I am cheated by hero honda service center

I bought my Hero Honda Splendor NXG bike this January after driving the bike for about 3 months one day my bike got puncher in an highway so I went to a nearby workshop and changed the tube, after changing the tube I felt that my bikes back wheel moves to the left side while driving so I approached the Fort Point Hero Honda Service center at Mahim Mumbai, the supervisor there told me that It is happening because of the tube so it has to be changed, I told him to change the tube and i asked him to do the powder coating also but in the evening when I collected my bike I found that the tube was not changed and no coating was also done, when I spoke to the senior supervisor (Khan Bhai) he told me that we have changed the tube please trust me.

I took my bike back and I experienced the same problem again now my bike has slipped twice and I fell down. Luckily I got no injury as I was driving slowly both the times. Now I am feeling that I have done a mistake by buying a Hero Honda Bike. I don’t know whom to approach.

I think I will have to file case against Hero Honda.