Billdesk — amount debited from my account but not paid to university

Address:

New Delhi, Delhi

sir, this is to inform you that i have made online payment to Ambedkar university Delhi through SBI debit card on 10 june 2015 .an amount of 185.70 three times to university. but university received only last payment of rs. 185.70 and rest amount of transanction of 185.70 and 185.70 is remained with the billdesk.com. therefore i request you please return my money to my sbi bank account (sb) that happened initialy twice, sector 18 rohini delhi - 89. my cell no. [protected]