I have today supplied the OP with a copy of the TPT case of 2018. It is not totally the same, but the core issue with this case is requesting the toll fee on the PCN even though the toll fee was paid, albeit late. To me this is unlawful, and Caroline Shepard agreed in 2018. If course, if the toll fee had not been paid at all, then the argument is solely about whether it can be requested on the PCN.
I believe there has been a later similar case which was lost. For me, TPT seem to be recruiting nodding donkeys at the moment, and those nods are totally in council favour. The later case totally ignored the judgment of the previous Chief Adjudicator, no less.