Don't see any "femdom" here ... at the most, Kasumi was a bit assertive in getting Driver-kun to accept her "terms of payment". And perhaps she's suitably impressed by his (a-hem) "skills", that she doesn't want this to be a one-time thing.
I guess that one guy was actually being a wingman when he literally pushed her into the cab.
"Write a complaint", though? Well, isn't it technically her fault that she can't pay the fare? I guess in Hentai paying with one's body is standard and he was going to refuse her payment...
That ending though. Well clearly, the latter option is the better one, so such a question need not even be asked.
I must say though, I'm still pretty curious about what actually happened at the beginning.