netdevphoenix parent
As a rule of thumb, getting access to human support is only a thing for paid accounts. If you just opened a free account and are not paying any money to Meta, Meta is rightfully not considering you a paid customer and is unlikely to spend valuable human time on you. I don't know why people think that internet-mediated services are free, you don't just jump on a train or coach for free.
In this case I think the pricing is based on usage, so it's not possible to pay ahead. https://business.whatsapp.com/resources/faq "We charge based on the number of conversations" "There is no additional fee to access our platform directly."