The City of Perth has failed to explain a number of recurring parking machine faults throughout the CBD.
In recent months there have been reports of a fault occurring throughout City of Perth car parks when customers were charged for parking but machines failed to issue a ticket.
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WAtoday understands when motorists attempt to pay with a credit or debit card, the machine often displayed a 'declined' or 'transaction failed' message.
However upon checking their bank or credit card statement, many patrons found they had been charged by the machine, yet no ticket had been printed. Â
There have been other reports of machines in West Perth, East Perth, Subiaco and Northbridge experiencing the fault, with some allegedly charging drivers twice for attempting to pay with a debit card.
City architect Kevin Grime said he had experienced the problem most recently while parking on Francis Street in Northbridge and only received a refund after calling the City of Perth parking help line.
"The first fault appeared around two months ago," he said.
"I only noticed it when I was going through my banking app later that day and realised the machine has charged me for two lots of parking when it had failed to work twice.
"I corresponded with them via their help line and arranged the refund through their customer service department. Â I did have to prove that I'd already arranged and paid for parking though."
Mr Grimes said the problem was ongoing and he had experienced the fault three times over the last month.
"The machines have charged my [bank] card each time I tried some on different machines on the same street and said 'transaction failed'.  At one time I even tried my personal visa card and it charged that too without any result," he said.
A City of Perth spokesperson said the City was aware of machines experiencing the fault and urged those affected to contact them.
"City of Perth Parking is currently investigating machines which may have been affected by a technical fault," they said.
"Patrons who experience difficulties with CPP payment equipment can contact 1300 889 613 for immediate assistance."
However the City failed to address how the issue would be solved, and instead apologised for any inconvenience caused by the fault.
Have you had a bad experience with Perth parking machines? Tell us about it: news@watoday.com.au