Canada Post — postal outlet lack of training

I understand that the workers at my local postal outlet are just drug store cashiers but they should be trained if they are going to work at the postal section. I shipped 2 small thin bubble mailers today - 1 to the US and the other went surface to the UK and it cost me just shy of $16. They were sent as parcels and I was told that if they weren't paper, they had to go as a package - new rules. Wow. In hindsight, I should have kept my envelopes and cancelled the orders. There's no way I can do business if I'm going in the hole because of exorbitant shipping. It's nice to have a postal outlet locally, but not if the employees don't know the difference between a tiny bubble mailer and a parcel.