Medlife — paid twice online & cod both balance not refunded

Address:	560048
Website:	Medlife App

I ordered medicines from medlife app [protected] no. I did online payment for the medicines but in spite of that delivery boy collected money for medicines from my house. When i complained to medlife customer care, they said they will refund me the amount after investigation but after 11 day also they are not refunding me the amount 991 rs. Whenever i call them they say they have escalated this issue to higher level. Now i don't know what to do. It's been 11 days but i am not getting my money back. Alternate no. [protected]