inefficient IVR

I bought airtime voucher on the 31st October 2015, tried to load it , but it was not going through until the 3rd failed attempts. When I call 173 to get someone to unbar my phone so I can load the voucher, there no option to speak to a call centre agent. It has been 4 days trying to get through to the call centre, still nothing, o can't make calls. Is MTN going out of business or something , please let us know so we can go over to other more reliable networks like Vodacom.