Samsung — Defective Micro SD card

Address:

Pune, Maharashtra

I just bought a SAMSUNG MICRO SD CARD from an authorised dealer in pune.When i went home and inserted it in my sd card reader it said card is encrypted.When i took the card back to the dealer the dealer said its company defect and directed me towards the service centre.The service centre said that it is the dealers fault and it has been damaged by him.What do i do with the defective card?My money has gone waste.I want a refund or replacement.I have the bill also.its been hardly 3-4 days.How can samsung give such defective cards!!!