Gearbest.com want me to delete thread here on BLF to get a refund.

I don’t get the point of this thread. You bought with Paypal right? If Gearbest does not act like a proper store, ask for refund through Paypal, end of story.
Do you want to raise awareness about Gearbest practices? You could first try posting in their feedback thread, it’s there especially for that purpose.