Bajaj Auto — sold me a defective motorcycle

Address:

Mumbai City, Maharashtra

I had bought the bajaj v15 bike from the executive bajaj - malad showroom. Within several minutes of buying this bike on my way home, the engine stalled, self start didn’t work. I called the showroom and was told that all new bikes face this problem and it’ll go away once i ride the bike often as the battery gets charged. Being a first time biker i believed them. The problem never really went away. The self start worked only occasionally and i ended up kick starting the bike often.
One fine morning the bike refused to start at all and i took it to the bajaj service center in ghatkopar for check up and servicing. They said that the battery was loosely connected and thus the problem.
The self start worked for a few days after servicing but soon went back to its usual state of working only occasionally.
A couple of weeks later the bike again gave up on me, this time on a sunday morning around 6 am, quite far away from any bajaj service centre. I had to go get it checked at a roadside mechanic. He diagnosed the battery and showed me that it’s completely discharged. This is after riding for almost riding nonstop for about 50kms a night before.
I suggested to him to install a new battery as i had had enough. After the repairs, i went with the old battery to the executive bajaj showroom - malad and asked them to get my battery replaced. Their attitude towards my problem was horrible. It was as if i had bought a bike of another brand and they had nothing to do with it. Their attitude was mostly summed up as “it’s not our responsibility” and “ do whatever you want”. The experience at this showroom is exceptionally horrible. The staff is quite incompetent and is insensitive to the plight of the customers.in fact i feel like they sold me a defective motorcycle knowing that i was a first time rider.
I called the executive bajaj service centre to replace this battery. After a lot of arguments and discussion he agreed. The battery is yet to be replaced.
Now the self start problem has erupted again. I’m not sure what to do.
This bike has other problems like gear jamming in 3rd gear.