Hertz is refusing to give me my refund

I rented a vehicle from Hertz (15C13V)Lanseria using their online portal on the 25th of August, to collect on the same day and return the vehicle on the 27th of August since my car was in for repairs. There after I called to confirm their closing time, which is when I was informed by their consult that my profile was blocked and I wouldn't be able to collect the vehicle until my profile was corrected. She then proceeded to inform me that my booking would be cancelled a full refund would be processed and paid in 7 working days. However I when called in a week later to follow up, I was informed that my booking was cancelled as a No-show and not as confirmed by the consultant. I escalated this matter with the Lansaria branch manager who later informed me that his reservations manager refused to update the cancellation status to the correct one since I didn't go to the branch, which happened because I was told the booking would be cancelled. Now I have to log a dispute process meaning they are not taking responsibility for this mistake and making it my problem. I'm being ****** by a legally registered company, the matter will be raised with the ombudsman ofcourse.