Hi i am new to credit cards. I took purchase card on advice I read from Martin about making a large purchase and spreading cost over 12 months, so no interest would have to paid on a purchase. However 1st Sainsburys statement arrived and says interest free period is 56 days for purchases. Am I right in saying if the full balance is not paid within these 56 days, interest will be applied? So I don’t actually get 28 months interest free if I wanted to clear the balance, it’s actually 56 days for each purchase?