A Horizon Parking spokesperson told the BBC the matter had been rectified when it was brought to their attention.
The BBC asked the firm to clarify if that meant the charge had been cancelled, and that potential legal proceedings had been halted, but it declined to say.
It said it had written to Mr Lynn, from Ashby, to inform him, but he said he had not received a letter from the company.
“We do make every effort with our processes to issue correct parking charges,” a statement from Horizon Parking said.
“We’ll investigate to see how we can improve, but would encourage drivers to appeal in circumstances where the parking charge may be incorrect, to enable the matter to be resolved at an early stage.
“Unfortunately, we didn’t receive an appeal and the parking charge therefore proceeded via our recovery methods.
“Once the matter was brought to our attention, it was rectified.”