Queensland's acting Premier Paul Lucas maintains Queensland's Go Card transport system is the envy of other states, but concedes the Government needs to do better.
An investigation is underway into how one person's Go Card credit was wrongly transferred to another person with the same name.
Two call centre employees have been stood down pending the outcome.
Mr Lucas says security protocols were not followed.
"People have raised a number of concerns about how the Go Card was rolled out in the last week or so and I've got to say we have to do better with that and Translink has got to make sure that it is doing everything in its power to make sure that people get appropriate and proper levels of service," he said.
"But having said that, we have a Go Card system that is the envy of other states."