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Greetings and Welcome to Just answer.
I will be honest with you because that is the only way to approach this. First this is not the kind of question most would answer because there is no way to give you good news. I will answer but Please understand I am being honest and offering a non biased opinion.
Part of me agrees with you that the clamper should have been more sympathetic to your situation, the other understands why the clamper continued. While I do not know you or the clamper, I am willing to bet that people have used any number of emergencies or issues to avoid the fee/fine.the Again, this is not to say your situation was not valid, but looking at it from the outside, I can understand both sides.
I am sorry if this is not the answer you want, but I feel that it is the truth.