I don't know where the expectation of anonymous complaint came from. If you complain about a business or person, you ought to expect that they'll be allowed to

I don't know where the expectation of anonymous complaint came from. If you complain about a business or person, you ought to expect that they'll be allowed to defend themselves against you. Especially if you complain to some 3rd party who already has an existing relationship with them... why would one expect preferential treatment?