There is a difference when delivery is stated before conclusion
of the contract (or purchase at the POS) and something which is not
stated. 
If something is not stated, it's up to the taxi driver to help,
but most taxi drivers are so despo for money, it's not within their
morality to help.
That's why I don't think very highly of taxi drivers.
I do encounter some TD who are like that:
recently just drop a pax at Tan Tock Seng Hospital at the taxi
stand and there is a cab in front of me and 3 person, one in
wheelchair waiting at the queue.
One of them approached me and ask if I can fetch them to Toa
Payoh Lor 4 and I said ok. I ask how come the cab in front dun take
them and she just shrugged it off.
Worst still, this guy refused to move off and the lady got
problem pushing the wheelchair down as the cab is occupying the
slope side.
I got to help her lift the wheelchair down gentlely.
I told her this my first time handling such pax so I might not
know how to move him, but she said no worry, he can get up the cab
himself.
Forgot to take a pic of that knn cab.
I got my fair share of IKEA pax too, with 3 long carpet roll
that needs me to bring down the front seat.
No big deal, all in a day's job.
Never once had I left my pax to put or retrieve things from the
booth. Always make it a point to come out, out of courtesy.
The very first pax in my life, more unforgetable. Just got my
merc cab from my hirer the first day and just drive around in my
neighbourhood getting a feel of it. One granny stop me and I
thought "cool! my first pax"
She told me she is a garong guni collector and her trolley wheel
just broke, cannot move. She ask if I can give her a lift to her
block, somewhere nearby. I thought, so old and still collecting,
just help la,
Then she led me to so many cardboard boxes and old newsapaper,
enought to feel the whole booth and back seat. She even expect me
to help her carry there and load it and upon reaching, help her
carry all of them to her lift lobby.
But all the time, she keep on saying thanks and "ah ma back no
good, cannot carry".
How's that for the first pax, great memory right?