Reliance Jio Infocomm — jio looted rs 500 through pre booking and not refunding the same

I have online prebooked a jio phone by depositing rs 500 via net banking.
Transaction id: fv000003iiqt. Voucher details are as follows:
Mob. No. [protected]. Area pincode 123106.
Since last one and half month i have informed through calls & sms that your phone is ready for pickup. I tried too much to procure from their stores but every time they responded as out of stock. Now i do not want to procure the same now. When i wrote to jio care regarding cancellation of my booking and to refund my deposited they are denying to refund.
Jio is looting rs 500 from the peoples like me.\

Arabinda kumar singh