Why the mail man or women never ring s the bell or leave the slip for the package pickup? Everytime my packages is being send back. .

I always get a problem with my package coming from canada

True and they lie too say they leave notice, I call the 800 number and make a complain

This. This is what happens to me too, and the form they leave isn't a schedule a redelivery form, you just have to go pick it up. USPS is a nightmare.