Help get product listed on Amazon

I am looking for a freelancer who can help me get my product listed on Amazon. I already have an Amazon seller account, so all that is needed is assistance with setting up the product listing. The requirements include barcode and company information. Ideally, I would like assistance regarding any specific guidelines or rules to adhere to when creating the listing, although I'm not sure if any exist. Product description and images, pricing information, and product dimensions may also be necessary in order to complete this project.
I have attached everything pertaining to this issue. Every time I try to add the product, I get the same response. I am unable to talk with any live person.