I kicked off the lesson with a Youtube video on computer rage:

http://www.youtube.com/watch?v=algWjS2yiyE

Then, I used this Prezi to introduce the concepts of computer/phone rage, leading to a instructions on how to complain about a faulty computer or phone:

http://prezi.com/hqpvtzxrwvyi/whats-the-problem/

After a drill practice with the students, I handed out a worksheet (attached). They had to complete this work sheet in their own time, and then use it in connection with the target dialogue.