I have been using Impark's PaybyPhone app to park in the same parking lot in DT for a while. One day, I was shocked by receiving a notice. Then I realized that the morning parking transaction didn't go through successfully on that day. I had been calling them two days and finally talked to two people over the phone. Although I could provide them the parking history for the same car as the proof of the app error, they insisted that there was no issue in their application and refused to cancel the notice. They also claimed that it was the customer's responsibility to ensure all parking transactions went through correctly, which I disagreed completely. Given that there was no physical ticket issued from an app, there is no way for any customer to provide them an electronic receipt as the proof when the transaction error like this happened. Their way of handling the complaints puts their customers in a frustrating and helpless position. They are pretty much saying that they are not responsibly for things went wrong from their side but their customers have to pick up the costs. They also told me that hiring a lawyer would be the only to dispute their notices, which is ridiculous.