Unfortunately, at the moment, for normal people, the legal system is our only option. I am not a lawyer, but I have done this multiple times: Read the T&C and

Unfortunately, at the moment, for normal people, the legal system is our only option. I am not a lawyer, but I have done this multiple times: Read the T&C and search for "dispute" or "dispute resolution". Look for what you're supposed to do when you have a dispute. Follow the steps as outlined. Corporate lawyers generally take things seriously.