VERY IMPORTANT PLEASE billing question?

what is this charge for?/ I never said you could charge my credit card, i am quite upset aabout this, i am disabled and live in limited funds each month and i cant afford for you to charge me for something i dont even know what it is please refund me this charge not right to charge me without asking not happy with yahooo here is the info from my bank 075947 #673110 1107 854061AMGRTGSYAHOO*ECARDS866-228-2434 OH i was shocked to see that you did this Sincerely Kathy