Dance CD/MP3 Stereo

Has anyone had any problems with this stereo playing MP3 Cd's? on a regular basis when I switch the CD player on it jumps to a random MP3 (not the one that was playing before the stereo was switched off) and the time display is completely wrong displaying 999:00 and will not go past 999 minutes but the seconds continue in a loop. I have attached a picture. My local dealership have replaced the unit under warranty once and I have not sent them photo's a week ago to back up the the fault is occurring again. but I have been told it could take another week or so before Skoda get back to the dealership. Has anyone else had this problem and could offer some assistance in this matter.

Thanks