Bad attitude

Government institutions think they can just give us ******* service and get away with it just like that. On the 14/09/2017 I called sars with my very own number at 8:22am and spoke to a lady which I forgot what was her name, trying to understand the amount has I had received on my bank account. This lady spoke rudely I tried to explain to her I'm not fighting with her I just need to understand, she kept speaking while I'm speaking, I was very calm as I had just woken up and im not a morning person, if she got me in my right mood I would have asked to speak to the supervisor or manager. But I just kept quite, at the end if the call she promised to email me something that would make me understand what I was querying which I haven't received up until this date then I tried to explain to her telling her I didn't appreciate how she spoke to me and she didn't wanna listen and hang up on me, and how I know the call didn't just cut due to maybe network is because I had opted in to race the service, so while speaking with her I just had the survey prompts playing, after few minutes I called again, mind you this is a chargeable call, I spoke to a Zanele, I asked to speak to a supervisor, she transfered my call to Gugu which I believe is a supervisor who I laid my complaint to and she too was to email me what I was promised. I asked her that I want this agent to call and apologise, it's been more then 72 working hours this happened but i haven't heard anything from anyone at sars yet Gugu said they treat their taxpayers with respect and dignity. Well just haven't seen that with me and that is why I feel government institutions don't have respect for anyone