They always bluff you and if you dont see it through to court you will pay. Its standard policy that they dont bother with complaints until it gets to court or the independent parking adjudicators. From their point of view, it makes sense to try and force people to pay the money even if they have a valid case, because so few ever want to take it further, assuming the council or police know better than they do.
At any one time Ive usually got 5 or 6 parking tickets all in the works clogging up their system in the appeals process. These are the disputed tickets Ive got at the moment:
2x ticket never received where I am claiming that they have completely made them up and never even saw my car
2x mistaken identity - they messed up and put down a wrong detail of my car like the wrong colour
2x loading and they cant prove otherwise, whereas I can show documentation that I had a valid reason to be there.
BTW loading does not have to be continuous nor is there a time limit, that is a lie made up by local councils to con people. I had a loading ticket disputed by the council and the adjudicator ruled in my favour that there is NOTHING in law that says I must be contiuously going back and forth, or leave my boot open, or EVEN have hazards on. I showed a delivery note for a number of items that needed collection from the back room before I could put them into my car and that validated my 15 minute stay on the double yellowed pavement. TOO BAD, SOUTHEND BOROUGH COUNCIL! SUCKERSSSSS!