Mobikwik — not refund my money even it is over 36 days

Address:

713377

Payment to mi.com Of Rs 12999/- two different transaction from different debit card money deducted from my bank account two time.
But showing that payment failed. When I contacted at mobikwik help he said the refund was done between 7-21 working days. But the matter is now payment date is 12 October 2018 . It is over 36 days but till not refund my money. Even I have contact to mobikwik help over than 20 times he was always said that wait 7-21 working days even it's over 36 days.
He was cheating with me.
My order I'd is
578014e426bbe & 8c00e416c5d3
One transaction has refund done but another one transaction is not refund
Please help me any one