Airtel — not received any refund yet after wrongly deducting

I tried recharging an Airtel number - [protected] with Rs. 199 on 13th January 2018, but failed, I was wrongly charged and did not received refund yet. I also tried recharging another Airtel number - [protected] with Rs. 199 on 22nd of January 2018, failed, yet was charged, did not received any refund till date. kindly do something about it.