They simply dont answer

It is impossible to get Exeprian to answer a call. I have been calling their customer care number several days. The phone just ring for long periods of time. Sometimes for 20 minutes on end. <br> <br> On top of that, one gets billed 100's of rands just listening to internal ringing tone. Please, how am i going to clear my name, if the company that has me blacklisted, does not answer their phone.<br> <br> Thanks.