Telkom lack of response or help to broken Internet

My Internet is not working. The red Internet light in the modem is showing. I have contacted Telkom in Twitter to report the problem (I don't have a landline phone). After hours or a day someone will answer to say either that the line is fine or that they will refer this to another division and 'revert' (Bizarre use of language) to me. Then nothing happens. I tweet or DM back that no the line doesn't work and get nothing back. After much prompting I get a generic response and then nothing. This has been going in circles for days. I have DMed them my number but no one has called. I'm under huge pressure for work before going away for work and need to use the Internet. I wish there was another Internet option as Telkom are so expensive and have terrible customer service. Getting the line installed in the first place was a nightmare as I would take the day off work and wait and then no one would pitch up. They wouldn't even phone to excuse themselves. It took endless calling to sort that out. If you have other options for Internet - go with them.