iTunes and iPod Touch "Payment was declined" I recently bought a new iPod Touch 5 and made 3 purchases. The last app I purchased downloaded successfully onto my iPod but I never got an email receipt from the store. So I checked my purchase history and it says 


  "We were unable to authorize your credit card for this purchase.
  Please update your billing info."


So I went to the "Billing Info" page and validated my PayPal account. Now it says


  "Your PayPal transaction was declined."


I tried adding a credit card as my payment option and I get:


  "Your credit card was declined. Please enter valid credit card information."



What should I do?

Thanks
It turned out that my bank was declining the purchases. Problem solved.