The staff here is not going to remove complaints about your services for you. whether they are "fake" or legit. If you wish to have service threads that are free of complaining customers, you have the option to create self-moderated threads. Then you can delete whatever "spam" you want.
I suppose that you can also make a rule on your threads that all complaints should not be posted on your thread, but in the scam accusations board, pms or elsewhere. However, the staff may still not help you enforce your rules.
This ^. Many of my Graphic Design threads were also tarnished in the past, there is no point in creating a service thread without it being self-moderated, I learned the lesson the hard way. You might get fake reviews from your competition. Most of them go like this!
SCAM STAY AWAY!Move your current thread to archival and make a new self-moderated one... Good Luck!