That's a question that may fall a bit in the grey area between a complaint about the behaviour of an officer, such as “was I treated roughly or rudely”, compared to “was I put out of the country for good and valid reasons”. If you have a dispute about the reason for which you are being removed from the country, there are legal appeal mechanisms available to you to contest the rationale for it.
On June 17th, 2019. See this statement in context.