Oh dear
I had different problems with Stonebridge, when I wanted to swap my course for another, which after many attempts of failed communication, being cut off on the phone and during online chats and told to call other departments. I sent a recorded letter to the supposedly correct department and didn’t receive any response. It was only when I mentioned seeking legal advice that my issue was resolved and I think unfortunately that is what it takes for them to take notice.
It is probably worth getting some help from the Citizens Advice Bureau if you can and make sure you read their legal small print so at least you are forearmed.
Good luck, I hope you get it sorted, it is hard work dealing with people who don’t seem to know to fully understand their own business.
Caroline