If I bought a set suits from a woman total cost is around 3k and I paid the amount but that sets of suits never reached me, then later i bought two suits of rs 1500 and I ask her about the suits that did not reach me, she was unable to help in the earlier so I did not pay her 1500 but the suits reached to me. I this illegal for me to not pay that 1500? Please help

If the seller posted the clothes to you and it was lost by the postal service then the postal service is liable not the seller.