I need to see one of your Excel files to get an idea of what needs to be done in order to convert it to proper column format. I will build a command-line PHP script to convert your Excel files to proper CSV files having the same structure you mentioned in your project description which you then import on WordPress.
About me
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I'm a Software Developer. I have experience in modern web technologies including HTML5, CSS3, JavaScript, JSON, XML, AJAX, PHP, and MySQL.
If you would like to discuss your project with me then feel free to send me a message even when I'm offline. I usually reply within a few minutes when online and within a few hours when offline.