They have a right to offer whatever terms they want, and you have the right to accept or reject those terms.

If you can't find a company that will grant you the service you want on your terms, you have the right to attempt to form your own company and find customers.

One thing you do not have the right to do is to try to assemble a mob and get them to vote a new law into place that would force the company to bend to your ideas on how it should be run. That kind of unlimited democracy is precisely the sort of tyranny that killed Socrates, and I say that is morally wrong.