Vanishing airtime and data

Prior to 5 April, everything on phone was working fine and had R152 airtime&400mb of data left. At the end of day, all airtime and data vanished.<br> <br> 6 April, recharged with R180x2=R360 airtime, tried converting some airtime to data as I usually do but failed. At end of day, all airtime vanished. Called customer service, they told me I was on the Internet the whole time to which I responded by saying I wasn't and I always close all apps, and don't have automatic or cellular updates settings for my phone.<br> <br> 7 April I recharged with R180, bought 1GB data, same thing happened.<br> <br> So I lost about R600 just over the past 3 days, and MTN keeps saying I'm on the Internet the whole time and I wasn't. Now I don't want to recharge only to lose money again and need to make important calls and use my phone but can't because it'll all vanish again! It's frustrating because I can't use my phone now.<br> <br> I've always averaged using only R180 per month for both airtime and data for the past 1,5 years on this very same phone! It doesn't make sense what is happening.<br> <br> MTN is a useless network with poor signal. After 10 years, I've now had it with this network and I'm now going to port to another network!!!