How to claim refund for TCS if I received back education fee paid to uk university

I paid education Fee Of Rs. 7,00,000/-  for my son who was in process of admission in UK university. But the university rejected his admission and refunded the Fee.

Latter on he got the admission in another university in the UK, But while paying deposit amount of Rs. 5,00,000/- TCS is applicable as remittance amount crossing the limit.

How I can claim TCS refund paid against Rs. 5,00,000/-

Anybody help me out.