Seems plausible. What about if you record a 15 minute video about their services, how great they are, why you are or are not using them, and why other people are using them. Then reach out to their pr + info@ + founder emails and give them your thoughts. Then perhaps they will look into what you can provide and take "the ball in their court" and come to help out.
If anything, it proves that you are serious about providing value and eyeballs to their services.
Good luck!