Ms Ballam suffers from a type of muscular atrophy that prevents her from being able to walk more than a couple of hundred metres.
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On the occasion where she received the note, she had been using a beach chair instead of her usual cane to help prop her as she walked to the beach with her children.
"I get looks occasionally because it doesn't look like I'm disabled."
Ms Ballam said she would like people to consider checking the card instead of the person, as many people's disabilities were not obvious. Her card was placed on her dashboard, directly under where her note was placed.
They need to realise that five minutes, it might be five minutes to them but for a person that needs to use that mobility car park, it means the whole outing.
Ms Ballam said she hardly ever visited the beach because it was too difficult finding a mobility car park.
When she did, often the parks are taken by "ferals", "rich people who don't care" or often parents picking up or dropping off children.
Ms Ballam said the line of "I'm only going to be five minutes" was the standard response whenever she confronted someone illegally using the park.
"They need to realise that five minutes, it might be five minutes to them but for a person that needs to use that mobility car park, it means the whole outing," Ms Ballam said.
"If they can't get into that car park to get into the shop or where they need to go, they have to go home again.
Sharon Trubridge said she also received an abusive note when she was parked in Fraser Cove in October.
It's annoying. It's upsetting. Sometimes I might not look quite bad but I have another illness as well as the hip problems. I get chronic fatigue.
"I had a hip replacement and couldn't drive, I was on crutches. My brother-in-law and sister came in and drove us up to The Warehouse and parked in a mobility park. We got back to the car and there was this note saying, 'you should not be parking here, this is for people with disabilities', etc., with lots of underlining and use of capitals."
Again, the note was placed under the windscreen wiper directly above where her mobility card was placed on the car's dashboard.
"It's annoying. It's upsetting. Sometimes I might not look quite bad but I have another illness as well as the hip problems. I get chronic fatigue."
There are 3511 people in Tauranga with mobility parking permits, which are managed by CCS Disability Action.
Tauranga City Council issues about three parking tickets a week to people parking in a mobility space without a permit.