Revalidation of registration

hi all.. my CAFinal registration got lapsed on 21st July.. I made online payment for revaludating the same on 28th July.. but because of the server problems I didn't get an acknowledgement of my payment from the site.. but amount is credited from my bank account... I attempted twice and at both the occasion my bank account got credited with 500Rs each.. in the student service portal it is still showing that my application for revalidation is pending..nothing mentioned about the receipt of money..i wrote a mail to the helpdesk ,but I have not received any reply... please... can anyone suggest me a solution???