What you want is Septorhinoplasty. Yes, it can be done, but about costing, it varies widely upon the experience and skill of the surgeon! An inexperienced youngster just out of training would well do it for a pittance whereas a Celebrity Plastic Surgeon would charge you about ₹8-10 lakhs for just his fee alone, which would out the total bill to about ₹12 lakhs!
Next Steps
Use this app to go through profiles of different ENT Surgeons in your city who do this procedure, and specially go through patient feedbacks to decide on the right doctor for you. Finally opt for a Teleconsultation with doctors where you could discuss the financial aspects there.