Sab Paisa — Refund of extra money deducted

I was submitting my neet counselling fees through hnbumu and when I was paying it through googlepay, my money get deducted but it didn't appeared in the site so I had to pay again . As my extra money was deducted and refund was not done. i want a refund of my 5012 rs
First there was a registration fee that I payed then there was a security fee that get deducted from my account but didn't appeared .. I had to pay again