Zoning Mtn

I forgot my card and wanted to purchase items for the conference so I thought of downloading and App cause I could not miss the day without buying those items as I stay in JHB but I was in Pretoria Menlyn.I had a data more than 1 GB but my phone couldn't download the app still I called MTN for help they said I should switch my phone off for 10 min I did but also when I switch it on still I couldn't install the app.In my desperation I went for WIFI which was also poor.Finaly I decided to try with my girl friend Phone she is using Vodacom in five minutes the app was ready I made a purchase.I have used MTN for more than 15 years but it's service is poor than emerging networks I write this with Telkom sim cause MTN couldn't do it.Even now I have more than 467 MB in my sim ********** 959 but there is no use I wish I can port to Telkom but I used this network for almost all my life do something or you loose this field