overbilling

<p>to my surprise this morning a premium of R820 was debited from my account,so i phoned mtn this morning to find out why i got a funny explanation as mtn in april has set on there system to block people to buy airtime or data unless you select your montly usage limit .to my understand the limit is for me to buy airttime or bundles as i get charges when buying it so today the consultant advise that i took a limit of R350 and have been making calls overseas all this story doesnt make sens because i bought airtime or i had the montlhly airtime received from mtn.i have been on hold for a manager for about 2 hours now . a consultant for 30 mins , 5 and 8 mins and they promised to phone me back , how ever they have cancelled the R350 crequest so clearly i cant buy airtime on my phone unless i buy from my bank .</p> <p>really deaspointed i want my money back please</p>