I don't want to pay!
Here is a copy of a mail one of my customers sent me, it never ceases to amaze me at the most obscure, tenuous and petty reasons or excuses people will come up with as to why they should pay less or if possible nothing at all! Regarding the installation of our  new pc onto the network. Whilst I do not mind paying £65 per  hour for the installation for a reasonable amount of time, a few years ago it  took one of your staff 5 hours to put a pc onto the network because he clearly  did not know what he was doing. Following this we have always agreed a fixed  price of one hours labour which should easily be enough time. Should there be  any unforeseen problems our end, obviously we would be happy to pay for the  extra time.     Are you happy with  this? Wadda you think?