CC transaction allowed less card & pin

14 March 2016 @ 18:15 while @ home I receive an SMS informing of a CC transaction in access of R6K was processed on my Nedbank Master Card which is in my wallet in a bag on the floor right next to me. I immediately call the number supp**** informing that there is no way this is me as I am at home watching television. Call centre agent blocks card. I request a contact number of the vendor or description. Informed I can not get the information until I complete dispute form. I request they put me through to *****s where I speak to Namsaka. I ask her for the details - she informs I must first lodge the dispute. Note it can only be done the next day. So i ask myself, is the person who is processing this transaction still in store as I acted this promptly or is my bank going to allow this person to get away while the footprint is so fresh? Anyway I do not get what I want & told by agent it is my fault for giving my details to the vendor. Note never in my life have I EVER given my bank details over the phone to any not to mention this is a chip card which is pin protected & requires a CVV??