Zerodha — Refund not issued for failed SIP Payment

I paid 16K for Parag Parikh Flexi Cap fund via Zerodha Coin Platform on 4th July. The transaction failed and money was deducted. Zerodha support team promised that the refund will be processed by 9th July, which became 14th July, then 19th July, then 22nd July, then 25th July and then 28th July

It's been 1 month and I haven't received the refund yet. They keep telling that BSE STARMF is doing reconciliation and it will be refunded shortly. 1 month is by no standard "shortly". I don't know how the recons are done, are they manually matching values

Please help me get my money back. People write off failed investments, I don't want to write off failed transactions 🙏