Sending the request to their management is only controlling if management force them into the meeting with you.
If an SP employs a call-taker then that is not control by the call-taker.
Your "definition" of trafficking is not correct, it is a specific, prejudiced interpretation to dishonestly/deceitfully bolster your claims.
The cab booking of itself is NOT a control, ONLY the coercion to get in the taxi, remain in the taxi and then forcing of them to dismount the taxi and meet and complete the booking with the punter.
Controlling Prostitution for Gain: Section 53 Sexual Offences Act 2003
Under Section 53(1), a person commits an offence if:
He intentionally controls any of the activities of another person relating to that person’s prostitution in any part of the world, and
He does so for or in the expectation of gain for himself or a third party.
Section 56 and Schedule 1 of the Sexual Offences Act 2003 extend the gender specific prostitution offences to apply to both males and females equally.
‘Gain’ is defined in Section 54(1) as:
Any financial advantage, including the discharge of an obligation to pay or the provision of goods or services (including sexual services) gratuitously or at a discount; or
The goodwill of any person which is or appears likely, in time, to bring financial advantage.
‘Control’ includes, but is not limited to, ‘compulsion’, ‘coercion’ and ‘force’. It is enough that the person acted under the instructions or directions of the Defendant. There is a wide variety of possible reasons why the person may do as instructed. It may be, for example, because of emotional blackmail or the lure of gain. There is no requirement for the person to have acted without free will
There is no mention of force and control has a variety of possible reasons. There is nothing to argue on that point.
In terms of trafficking the law was updated to the modern slavery act in 2015 and I was going on the previous law which was more specific to sexual exploitation but never the less can be interpreted how I initially said.