excess payment of VAT in last Jun return file

Dear sir,
We had made wrongly excess payment of VAT amount of rs 75000/- for the month of June 2017. We already revise return VAT. Now Current GST regime, what will do
1. adjust or ITC claim of such excess payment tax made,
2. Can I refund it
3. Can I file application / letter to VAT department

Please help me which option I choose