Vicky Phelan was left furious when her car was clamped as she was getting her bloods done in St. Vincent's Hospital.
The women's health campaigner was involved in lifting the lid on the CervicalCheck scandal in 2018.
Vicky bought a ticket for the parking spot and it was a mere six minutes out of date when a clamp was put on her car.
She told her Twitter followers that "it was her first time getting clamped."
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She said: "In the grand scheme of things, this is not the end of the world and I am lucky that I could afford to pay to be declamped BUT I have to have a vent about this and get feedback from all my friends here on Twitter."
Vicky explained that the Hospital car parks were full and that she had to park in the church car park across the road from St. Vincent's.
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The mother of two from Annacrotty in Limerick parked up at 10:06am, paid the ticket fee and headed to her appointment.
She said: "I returned to my car at 11.16 to find my car had been clamped at 11.12. The clamper, or enforcing agent as they are known, was still there clamping others."
Vicky pleaded her case to the enforcing agents but was left with no other choice than to call the Nationwide Controlled Parking Systems (NCPS) in order to pay the fine to get the clamp off.
She continued: "I had to call the NCPS to pay the 125 quid so that I could have my car declamped while yer man was still in the car park. That done, and with my blood boiling, I moved my car and vowed to appeal while I was having treatment."
On further investigation, Vicky claimed that she shouldn't have been clamped.
The mother-of-two said: "I located the legislation around clamping and discovered that I should have been entitled to a 10 minute grace period and based my appeal on these grounds, hence the times above.
"I submitted my appeal not because of the money, but on the principle of the matter."
She concluded: "What if I didn't have the money to pay on the spot to be declamped?
"What if I had literacy issues and was unable to understand the complicated parking rules in the car park? What if I was not educated enough to formulate the grounds for an appeal?"
Dublin Live reached out to Nationwide Controlled Parking Systems for a comment.
