Outbound customer servise calls

I need a virtual Assistant to cover general office duties such as outbound calls, receive and send emails, make inquiries to suppliers.
We are looking for a native British virtual receptionist to provide phone support to our company. I need someone with telemarketing or phoning businesses experience. It's really important that I have someone who is confident on the phone, timely and reliable.
Our new and exciting company provides a land acquisition and corporate property relocation service
What they will do:
- Make calls to our clients
- Receive emails
- Reply to emails.
- Be the voice of our business
- Handle customer inquiries that come in through phone
- Follow up on past customers
- Handle customer complaints/suggestions for improvement
I need someone with telemarketing or phoning businesses experience. It's really important that I have someone who is confident on the phone, timely and reliable.

Being a small company we are looking for someone who has other clients and can fit us into their existing program.

The average number of outbound calls needed per day is just 1 - 3.

We are looking to pay on a per call, per email basis whereby the receptionist can invoice us on a weekly/monthly basis for all calls/emails.