Following a second dispute with the same driver the following day, Ms Bewley then complained to NZ Bus.
Today, Kevin O'Sullivan from the New Zealand Tramways and Public Transport Union said while the investigation continued, the driver in question would remain suspended.
The bus driver had not been at work since last Wednesday.
He said the investigation would hopefully be completed by the end of the week, and until then, he could not make any comment.
"Once the investigation is complete, we will take it from there whatever the outcome might be."
Ms Bewley said she had received an email from NZ Bus last week, explaining that the driver would be stood down until an investigation was completed.
"They explained to me that the bus driver was still off the roads. I've been catching [the bus] a lot the last week."
She said she felt at ease using the bus knowing the driver was off the road, and hoped NZ Bus would notify her when the investigation came to an end.
NZ Bus were not immediately available for comment.