National Magazine Exchange Cannot cancel already paid for. Just called to inter sweepstakes. CLEARWATER Florida

I called to inter the Sweepstakes.  I entered and they talked to me about magaziness and i said i did not read them.  They talked me into ordering them.  They would help my chances in the sweepstakes.  I would get a watch with the order.   i called to cancel and they said i could not cancel them they were already in the process to be sent to me, and they were already paid for.  I was unable to cancel them.  I live on a fixed income and i am 80 years old.  I feel they really took advantage of me.  Violet   wetumpkalady@tds.net   Quincy, Florida