I will never buy this company motorcycle. Review on Bajaj Pulsar 150 Neon

I purchased this motorcycle in January of 2020, I was offered for 4 servicing free of charge from this motorcycle company when buying this motorcycle, and with this I was given a helmet free from the showroom of this company then I got home with my motorcycle. And after a month riding this motorcycle, I got a call from this motorcycle company that I had to take my motorcycle to their service centre from first servicing. Then I talk the motorcycle the service centre from this company full stop from this company's service centre, my motorcycle made a fast service and took a service charge of 2000 rupees. After the first service, I brought the motorcycle home. and after driving the motorcycle for a will I noticed the real break of this motorcycle is not working,

and a a sharp noise is emanating from the chain of the motorcycle. Then I call these motorcycle company service centre then from the service centre I was asked to take ek the motorcycle to them then I talk the motorcycle to the service centre and they repaired the motorcycle. Then after driving the motorcycle for sometime, the same problem arose again, then I call them again at their service centre and tell them the problem. And from the service centre the motorcycle was checked again and handed it to me. But after a few days, the the same loud noise from the motorcycle chain started again. I took the service centre bike again but they did not solved the problem of the motorcycle.