I'd have to disagree, I buy an return a bit on Amazon but, I have never found the returns process or chat/call to be anything but slick with a serious customer focus.Regarding my wrong size pump. Have you tried to contact Amazon. Brilliant - NOT.
You need to go to help, then more help or something and then chat/call now. Then the bots asks a few questions, I just put issue not listed, need to chat to assistant, then I'm into chat.