I have ordered several items shipped by Amazon via...

I have ordered several items shipped by Amazon via Purolator.. Everytime the delivery reaches the city on time and from there it gets delayed by 2 sometimes 3 days to be delivered home.. they say address is incorrect. I don't know if the driver even attempts the delivery. May be easiest way is to escape saying address is wrong. How will the same address be correct after calls are made to customer care ?
Presently I am waiting from past 3 days for a shipment to be delivered home even after reaching the city 4 days ago.
May be I have no other option as Amazon chooses Purolator for items which are more than 2lb.