All India Institute Of Medical Science [AIIMS] — all india institute of medical science [aiims] aiims norcet exam 2020 payment issue

My name is ms. Nirupama behera having a candidate id number - [protected] for aiims norcet 2020 exam with reference to the nursing officer position. I have completed my application until the experience section. Afterward, when i was proceeding for the next step i. E, payment section, even though rs 1200 is debited from my account. It is showing "a payment has already been initiated for the same reference number. Your request cannot be processed.". I am unable to proceed further. Hence, my application is incomplete. I tried to contact aiims on its toll-free number given at the aiims application website. I mailed them but nobody responding to my call and mail.