Inefficient and dishonest Parking office

I had the most unpleasant experience with parking this morning at Sandton. I was paying for parking at approximately 11:43 and the R100 note jammed in the machine. I used the assistance button on the machine and the operator informed me that an attendant would arrrive shortly. 10 minutes later I went into the parking office where the receptionist called for an attendant and I was informed that the attendant is on the way. Another 5 minutes later I called the parking office again and an attendant then casually strolls to me and even short changes me. Further on at the boom, I wait for another 5 minutes while the person on the other side is unable to assist. This delayed me in terms of my work and has created an unpleasant shopping experience due to inefficiency of the parking office.