Yesterday i damaged my 3 switches (idle up, gear and timer) 
So I was thinking if spares for transmitter are available in market? Or some one have some switches?

Since you are in Delhi, goto lajpat rai (chandni chowk) for the switches. Ask for toggle switches. You will need one normal toggle, one spring loaded toggle and you will have to look for the three position switch but yes it can be found with little effort (take the switches along, not the Tx). Try shop 614/629/644. They should be pretty reasonable (about  :Rs:20-25 each). My Tx's shoulder switches are replaced ones and work well. When you open the Tx, take care of the screws, dont overtighten or you will end up taping your tx soon.

Thanks a lot girishsarwal sir and Hellyflyer , i will be heading to chandni chowk soon