Poor customer servies @Telkom

Extremely bad service received at Telkom self service platforms. I have a contract line and I'm trying to buy airtime in order to be able to perform USSD functions (retrieve ewallet pin). I get an error message saying I don't have sufficient funds , this is when dailing *120*277# . When i also try to buy airtime the service seems disabled and would not allow me to buy airtime. I left several "request a call" messages and no one is willing to help. this is the worse customer services I've ever received.