I want my money

Very very bad service I'm even considering to port to a better network. In November 29 I recharged my account with R160 airtime still it hasn't reflected on my account. I called the call center several times they kept on promising me that they are working on it. They gave me case numbers and asked me to email my proof of purchase which I did but still to this day I have not received my airtime. This morning I received a message reminding me that I owe them R29 for emergency top up, how am I supposed to pay that if they still have not recharged my account. Infact I think I need them to refund me my R160 I don't want their airtime anymore its been long overdue