Amazon India — Cheating/ instead of supplying pendrive received metal piece

I placed 2 orders on 17 th may 2017 for 2 nos and 1 no. Pendrive on amazon.
I received package and paid rs 620 + rs 520, when i opened the boxes i found metallic piece instead of pen drives
Immediately contacted amazon customer care, they confirmed that they have blacklisted their traders because of such recurring cheating incidences from traders.
Amazon committed to refund my rs 620 + rs 520

But till date i have not received my refund and everytime i call they ask mr to wait 24 to 48 hours