Sulekha.com — fraud/client data misuse/cheating

Dear sir/madam, few days back i am provided list of ca located in bihar and i contacted one for the related work. I inquired about some legal aspect and requested for legal support and guidance. The ca asked rs.9, 999/- for the complete service and at initial phase asking for rs.5, 000/-. For the sake financial safety i paid rs.2, 500 and rest after completion of process, i informed him. Meanwhile ca has already acquired digital signature certificate and for the remaining process taken all needed documents. Now ca - mr. Prakash singh - [protected], firm's name - shantayai business solution pvt. Ltd., not picking up calls and stop responding. I have been trying him to talk for last couple days and he is avoiding call.
It is to request for quick action against him and protect my personal data from misuse.
Hoping for quick action and reply.