REFUND OF TCS IN GST

Sir

I'm sale my products on flipkart and flipkart deduct tcs on gst and I file my TCS return on porte and claim the TCS amount and it's credited to cash ledger I need to ask that I want to apply for refund of my TCS so in which heading I need to apply it

1. Excess balance of cash ledger or

2. Excess payment of tax. or

any other heading

please tell me

thanks