Hmmm seems like a bit over reacted from OP which causes an overreaction from MoP. He sends one email and doesn't get a response which is indeed unfortunate but people can make mistakes
In stead of phoning MoP or resent email he decides apparently to block the total payment, so also for goods he did get. How would you feel if your boss takes away your whole month salary because your lunch break took 5 minutes longer? There has to be a balance between act and reaction
Have dealt with MoP numerous amount of times without an issue but do understand a shop is run by people who can make mistakes. Give people a break, makes live much easier pinball is for fun, not stress
Sofar my 2 cents on this topic