Idp Ielts — Registration money deducted but no confirmation

Booked for academic IeLts slot yesterday night and the payment was processed and sum of 15650 was debited from my account and their page showed 404 error and now when reached out to their customer support they said no registration is found under my passport number and money will be credited back in 7-10 days and should register again. They weren’t even ready to listen to my further questions and they just cut the call abruptly. And this is urgent because the slots fills up fast and it’s a lot of money to debited and not being able to register after that also. Kindly solve the issue.