No response from Telkom

Our internet connection has been tempremental for quite some time. And then 2 months ago it just stopped working, along with the phone line. We reported a fault and got a call that it was fixed. The phoneline was but the internet connection wasn't. We've reported another fault and have not heard back from them since. We have phoned on multiple occasions and been met with some terrible attitudes, even with one putting the phone down on us when asking to speak to a manager. We're getting desperate as our business is mostly online and we're paying thousands in mobile data. Please help!