SARS not attending my matter

I'm so angry with sars right now, I did check my e failing and I found out that I'm owing sars 4700 and something I went to the branch to find out what is the reason I'm owing sars so much and they check and find out that I don't have medical aid of which that was a lie so they said I must bring proof and I did and they say it will take 21 working days to correct the error and to see if I'm owing or not but still when I check my app nothing happened and I feel like a fool because I still need to know why I owe sars such big amount after I'm being taxed every year lots of money