I HAVE HAD THIS PRODUCT SINCE AUGUST - NOW EACH AND EVERY TIME I TRY AND USE THE APPLIACE THE DOOR LOCK DUE TO NOT BEING USED FOR 5 MINUTES DISPLAY COMES ON- EVEN AFTER FOLLOWING THE RECOMMENDED OPENING AND SHUTTING THE DOOR AGAIN IT DOES NOT ALLOW THE MICROWAVE TO START TO COOK - JUST KEEPS REVERTING BACK TO DOOR CLOSED AFTER PUTTING IN COOKING TIME