Diners Club Lack of Customer Care

My card expired in October. I was not informed that a new card was to be sent - apparently they switched off the renewal functionality. I called to report more than a week ago. First I was promised someone would call me. Still waiting. The second call I made promised to have the card delivered. I even got an SMS saying the courier company would call me. Still waiting for the call. The last call I was told the card was never got to the courier, but I will definitely get it Monday. I am not holding my breath.