What's wrong with my metro card??

Yesterday, I inserted my metro card into machine on the bus to go to school but the machine said "read error" with red light. I tried to do again and again but it didn't work. The drive let me ride a bus saying "Don't worry. Sometimes metro card goes wrong". However I didn't want to feel guilty when I took a bus. So after school I dropped by the LI bus office to solve this problem. The officer said "I don't know. What happened to your card. Why don't you send mail to bus customer center with your card? They will solve it after they check your card". However, it takes 4 or 5 weeks and unfortunatelly I have to buy new one. My card's expired date is on 15th, december. It means I have to pay for my 11 days' fare. It is very bad thing. So I got angry because of my stupid metro card!!!!!