Get a recording of you asking them to confirm their refusal to accept cash payment for the pre-fee amount. They will either let you do it or you have good enoug

Get a recording of you asking them to confirm their refusal to accept cash payment for the pre-fee amount. They will either let you do it or you have good enough evidence that the managers not gonna make an issue when you have a recording that will make him look like an asshole in front of a jury and his boss.