Need professional guidance for audit sign

i need professional guidance as i have a company and running from 2011 and two year return filed and now 2013 year return to be filed. but due to some issue like location far.I would likt change CA. i went to my current CA in sept and clear everything nd issue NOC.He ask me to send that via new CA and we did same but later on he not signed noc nd not giving resign of current year 2013. now he not signing my current audit and not permit to fill by new on. finally i again go in office nd talk to fill either give regign than ready for return filed but put two three condition:- 1. next year return will file by him and will file 23b for next year as usual. 2. charging me 20000 audit fee while last year 5000-6000. 3. if we want his resign than asking to pay 30000 (only for resignation) so i need some guidance on urgent basis.. thanks a lot