Last week, I drove in with my motorbike and did not pay and walked my bike through the pedestrian exit. I was threatened by the manager that next time they would call the police and get my bike towed. I told them I would pay the fine but they said they dont send fines (!).
I know.. pay for parking etc etc..
Legally, can they do this or is it just a scare tactic?
No, the police would not even attend. That's just a scare tactic.
If you comeback again you could be sued for trespass.