So after 15 years of selling on eBay you don't know how to contact eBay? This is not the way to contact eBay! You also don't know how eBay estimates delivery times. We fellow eBay users (just like you) have no control at all over what is displayed on your listings.

Given your propensity for blocking anyone who provides feedback you don't like or follows correct eBay procedure and opens a request, I'm wondering how massive your blocked buyers list is ( feel free to add me to it). 

Your excruciatingly hypersensitive reactions to your feedback suggests you feel like a perennial victim with anger management issues. This is really not good for your health. The way to stop being victimised is to take responsibility for educating yourself as to how things actually work instead of constantly blaming everyone else.