I'm not a delivery driver or anything related, but I have a lot of sympathy for the people that do this job.
They are paid per parcel delivery - one of the big firms mentioned here, pays 70p per parcel. That's shocking, and more so when you consider that if the recipient or neighbours aren't in, you don’t get paid. You are asked to try on 3 consecutive days, none of which you will be paid for unless it is delivered.
Is it any wonder then that certain individuals will try anything to tick the "complete" button on the handset, whether that means leaving in a wheelie bin, a flower bed, or a porch?
I am not saying it's right - it's downright irritating and I've been there when a company delivered my curtains to a road five streets away (one who was happy to take in the "freebie" and sign for it, probably not knowing what it was amongst their numerous parcels).
What I'm saying is that we expect the moon on a stick, free next day delivery despite being out most daylight hours, we criticise the couriers not the large non-tax paying firms that use the couriers.
A boycott wouldn't even cause a flicker or ripple in most PR departments. I'm just suggesting that if unhappy, message the firm itself, shame on TrustPilot, Twitter etc, as it's the only way they'll go and procure the services of a courier that counts delivery as "placed in the hand of a customer".