Poor Service

I've been struggling with telkom for the last 48h regarding my network that has been disconnected. I've phoned the accounts department more than 12 times and each time they tell me my account is outstanding with the amount of R444 , but my account is paid up front and I'm in credit of R1000. They do not want to assist you in any way forward and do not want you to speak to a manager. After each consultant I have spoken to they confirm my account is in credit with them and my phone will be active again within 3 hours, 48 hours later and still my phone is not working. Please advise in a way forward. Will they compensate me for the business loss?