None existent service

Over the years I've purchased a fair number of Bosch Siemens appliances and tools (3 fridges,3 ovens, 3 stoves, dishwashers, washing machines and numbers professional power tools). This was primarily as the quality was good and the service was excellent. Unfortunately both have declined. This is the second time in a year I've hit the abysmal service. I need to get a replacement part for my dishwasher. Firstly the find the part function on the website is broken. Secondly the FD number on the appliance has worn off (it is about 5 years old). I therefore sent a request via the web site to BSH requesting if there was another location to find the FD number and the part to be replaced. This was on the 15tth of Feb. To date I have not had a response.