Design Savers Plan LLC Health Plan ,Aurora Co.

Subscribed to Design Savers Health Plan over phone , with in hours called them to cancel and was told to E Mail them in 24hrs to cancel, did so but were still charged $267.50 on my Master Card. Called Sears master Card told them the charge is to be disputed as the service was canceled prior to its starting date. Since then was charged $142.50 ,four times totaling $570.00.more.Canceled my card and got a new card number.I just got a charge on my new card number for $ 142.50 . Can any body help me?