I encountered a similar situation where I was billed for a Dropbox subscription I didn't knowingly sign up for. It was frustrating trying to get in touch with their customer service to resolve the issue. While searching for solutions, I came across some dropbox reviews, where others shared their experiences with unexpected charges and difficulties in obtaining refunds. Reading through these reviews made me realize that this isn't an isolated incident. I eventually managed to get a refund, but it took several attempts and a lot of persistence.​