For native English speakers only: Call Clients and Potential Clients

I want someone to assist me with calling potential clients and clients. Your role is to call potential clients and ask them to check their inboxes or spam folders for our messages or remind them to pay our invoices. You are not required to sell or promote anything at all. I need only native English speakers for this project, please. Bid by answering the questions below: 1. What relevant experience do you have for this type of job? 2. What is your hourly fee to perform this task?