Ebay India - fake sd card delivered

i had purchased *** gb memory card from ebay (item id – ************). when i inserted this sd card, the memory shown was *** gb. it should actually show less than *** gb, considering that the system files occupy part of storage. i copied images, video and music from my internal storage to the card, and none of them opened. when i reverted to storage settings, it showed "card corrupted". the original files from my internal storage also got wiped off. i raised the issue with ebay for return and refund, and they denied any support because the product was covered under guarantee clause. they insisted me to sort this with samsung service centre. i had been to the samsung service centre named supertron at lamington road, mumbai.they clearly confirmed that the sd card is fake and cannot service a counterfeit product, as the warranty/ guarantee stands void. the sideways colour is black instead of white, as told by service centre.the packaging mentions made in korea, and the product is made in taiwan. the packaging mentions sdhc, and card delivered is sdxc. the colours used on the sd card are also different from that mentioned by seller on ebay website no doubt, the original product has been replaced with a fake card in the original packaging. my further emails to ebay regarding the service centre’s claims are bouncing, because maybe they have completed their transition to flipkart. i request you to take this issue with ebay and initiate my refund process. the warranty applies only if the product was genuine, but since it is not, ebay has to take responsibility. ebay cannot become a platform where dubious sellers can sell their counterfeit products and get off scot-free. the due diligence of the seller and it's product claim is the responsibility of ebay, and it cannot escape customer service by passing the buck of fake products on the buyer. i expect a stringent action against this dubious seller and prompt redressal of my grievance.