Provide front of house and reception services for the office
Operating the switchboard
Telephone enquiries (internal & external)
Handle couriers and post deliveries and collections
Keep reception area neat and tidy
Check e-mails and react accordingly
Adhoc tasks as per demand
I would say Receptionist, but it's really your decision in the end, you are the person concerned, you are the person most aware of your ability, you are the person who will be doing the job. We know very little about any of these details.
This will sound harsh but it's meant to be fair. You've been asking us for months about countless jobs. Presumably your agency sends you and you have never got any of them. What is your agency doing to help you or what feedback are they giving you. Where are you failing because there is clearly something wrong?
Either that or you just like chatting to strangers about froth.