Delonghi Magnifica EAM3200S

Hi,
My machine is 15 months old and I started getting coffee grounds in the Espresso. I took it in for repair and they said it only needed a cleaning. It was good for about 20 espresso's and started doing it again. To me it looks like the grounds are not going into the holding bin, they are sitting on top of the internal unit. So every coffee has grounds in it, do you thinks it the internal unit? They said everything was working ok.

Thank You.