Confusion reigns in Vcomm Business: I'm crazy frustrated with no solution

I have to cancel a Telkom fixed line that was used for a ADSL line. The ADSL was through a service provider of Vcomm Business (Maringa) . They have simply disappeared. Telkom cannot cancel the line until Vcomm Business has released it back to Telkom. I've been trying (and paying for the defunct Telkom line) for 3 years. No avail. Nobody at Vcomm has the fantast clue of what to do . The call center staff just give me the blank stare attitude and put me on hold until I drop the call. There are no escalation paths advertised at all so I have no where to go. This has cost me thousands and still no light at the end of this very long tunnel.