I found it ammusing that someone searching in Google, ran across my blog with the phrase how to punish a customer.The immediate throught was here is someone looking for ways to punish their customers! A bizarre idea. Well, maybe not. I think think of a few good, real life examples:
packet8 this voip service gave me grief for "excessive international usage". After spending about US$100/month for international calling with them, every month for about 18 months. One day, however, they imposed a new policy which basically said $10+/month of international usage was excessive! I am not longer a packet8 customer.
American Airlines still wants to issue paper tickets and mail them to you for some flights!
Expedia wants you to sit on hold with them when their member hotels put a monthly subscription on your credit card when you made a hotel reservation.
Hotel Roma Plaza who put a US$60 montly subscription on my credit after I didn't stay with them because they left me stranded at the Panama City airport, apparently because their procedure for the free airport pickup is impossible to complete.
So, yes, it might well be that businesses all over the world are looking for new ways to punish their customers.