Csab — regarding refund of fee from csab

I have withdrawn seat from csab counseling after first round but didn't get any refund till now
My main no. Is (19*)
Always they say to update details for refund. Already i had done it but they are not responding so please help me to get money refunded.
Nearly 6 months is going to be finished but still not received any information regarding delay in refunding my money back