Bosch Classixx programs run for 2X sceduled time?

My Bosch Classix 1200 Washing Machine takes three hours to run a program that should only take 80 minutes, I have also run a wash that should take 30 minutes and I had to stop it after 2 hours as it showed no sign of ending. Sometimes the water does not drain completely at the end of a cycle. Can anyone tell me what the likely fix is for this problem.

Thanks