Oh my gosh that was HORRIBLE. I'm so sorry you had such a stressful merch experience with Plush Wonderland. The entire thing was messed up, but in particular I cannot imagine how devastating it is to have to console fans of your work for not receiving a refund yet and have their trust in you tampered with. It's totally the company's responsibility to keep their buyers informed about refunds and next steps , and yet here you are needing to relay that information instead.
Also the change in English completely grinds my gears. It's clear they gave this project to someone who had no idea what they were doing and most likely no experience. Like, just choosing to extend the campaign without your input is so wrong!! They messed up and dropped the ball at every single stage and then once the SECOND campaign is near its end they just magically find a completely different person with a way better handle on the English language to calm you down. Where the heck were they before?? Why weren't you offered their services instead of the total newbie's? And how is it that your friends and dad just magically received a refund after that email went out?!? Like, did the other person not even start the process?
Even though your horrible experience with Plush Wonderland began from the ineptitude of a single person, this speaks to a bigger problem for the company as a whole. It sounds like there are no systems in place to ensure that each campaign is managed with a baseline level of care and consideration. A single employee shouldn't have been able to wreck this much havoc. There should have been people checking in on this project, supervising this person, monitoring the situation. Instead it all fell to one person who made everything fall onto your lap instead. They need to release a statement and run you a check for the damage they've done not only to your mental health but to your reputation. This is VILE. 
