poor service at mtn

On the 21st I got my contract airtime from MTN R210,and following day still had it.On the 23rd in the morning my airtime was R174.58,I quickly contacted MTN to want to know what took my airtime,a lady who helped me told me they couldn't see on their side what happened to it,I must fone back after 3 to 4 hours which I did,but before I did I checked my airtime again, that's when I find out my whole airtime is gone.Then I foned them again they say they gonna send my query to some department, I waited for a week still no response from them, foned them again spoke to a lady called SBONGILE, she said she's gonna escalate the query, and get back to me via email, till today when I foned them back. Spoke to a guy called THATHO who told me to wait another 3 to 4 days cause apparently SBONGILE send the query to the wrong department, Now I must wait again whereas they deducted their money again end of the month in July.Am very cross right now with MTN,cause they seem to not resolve my problem. Instead today they gave me free 500MB whereas I want my airtime back.Am very disappointed with the service I g<br> ot from them, cause I've been a loyal customer to them for many years now . Nondumiso Mafani