Having lived in Germany, I must say the quality of customer service there is the worst I have ever seen.
+ A fridge I purchased was delivered with a 2 weeks delay, at 10:30PM (!!) on a Saturday (only because I kept calling every other day).
+ I've ordered a new broadband connection for an apartment I was renting. After several months (!) of waiting and calls, I found out that the former tenant had unpaid bills with the provider and they therefore refused to establish the connection (I was only informed about this after 5-6 weeks of wait during which I was told everything's ok and pending execution).
Here's a story about how my laptop was broken and I was calling a repair shop:
Me: "Good morning, my laptop doesn't seem to display anything, looks like it's a problem with the screen, how does the pricing work in this situation?"
Shop: "Ugh...", the guy is annoyed.
Shop: "This is like saying you have a headache, and asking a doctor what needs to be done!", He shouts.
Me: "No need to get angry, I was just wondering-"
Shop: "Just bring it to the store!" - hangs up.
This is a perfectly normal experience dealing with customer service in Germany.