Supervisor with an unprofessional attitude

We have an employee being sent back and forth requesting the same info, over and over for the last 2 years with reference to his travelling allowance fringe benefit. After his 8th visit to SARS, i finally call them to request why hes is being sent back and forth repeatedly, when we as the company have provided them with the relevant info countless times. i was put through to a supervisor called Manfred who after my countless explanations decided to throw down the telephone in my ear. Hes reason obviously is that he cannot help me, without the taxpayer being present, which i totally understand. My point is that SARS is requesting documentation from the company that we have already submitted numerous times. Their staff are rude and ***********!!!! I will attach a copy his log book submitted and the letter we have given the him as they had requested. He is then then referred back to the company with a had written note, merely asking for opening kms, closing kms and Cost price of vehicle, all of which was attached to his pack? this is a total wast of his time, the companys time and of course taxpayers time as these *********** employees are being paid from our taxes. i also find it very unprofessional the the supervisor threw down the telephone in my ear, whilst i was still speaking to him. SARS provide your employees with the necessary training as i deal with customers all day long and never once have i slammed down the telephone in someones ear. Please further note that this query has been ongoing since the 2016 financial year to date.