Mtn keypad app disfuntional

I use the mtn keypad app to check airtime balances and load data on my iPad as this is the only option to use airtime vouchers to load data. This app has been disfiunctional for weeks, it keeps on saying I am not connected toe the mtn data network.<br> I tried numerous times to contact contract customer care but they hardly know what I am talking about and refer me to the pay as you go call center where you have no option to talk to a consultant but can only follow voice prompts which does not resolve the matter! Thus it is extremely difficult to use my device on their network!!!<br> <br> They do nothing t respond to email communication or any other way of obtaining help.<br> <br> My other option is Vodacom with weaker signal but at least their data loading app works!!!!