Samsung — Got fooled by samsung agent about product purchase policy

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I have purchased a samsung galaxy tab s6lite on 30 nov with d offer flashing on the sceren to get galaxy bud live with d tab.i asked to an assistant that if i purchase d product on 30 nov which was d day on that day .m i eligible to get the offer she said yes u need to buy the product today only as d offer last day is today only.i asked her again n again about d offer she said yess u will b eligible to get d offer after receiving d product nd need to activate nd with 72 hours to claim d offer i got delivered d product on 2nd if dec i waitied 6 dec now samsung agent saying u r not eligible to get d offer .u guys make fool customers nd make money this is reputed nd trusted compony nd this kind of misguidance to customer is not acceptable at all.this is cheating i need my money back nd want to return d product i dont want this product 0anymore ...