Openserve doesn't attend logged calls

So I've been having an issue with my adsl line for a few months now and I've logged several calls with telkom and at first the technicians use to attend but they don't anymore. Initially when the technician Riedwaan and THEO came out they said there's an issue with the cabling in the ground and it got wet but it's a mission to fix and he doubts they'll fix it as it's going to cost to much to repair, their manager Brent then contacted me and asked if there's no other service provider I can use as they won't be able to fix this anytime soon and he suggests I get a new provider. The issue persisted and I've logged calls in the last two months and no one contacted me and every call I've logged has just been closed without my consent. So I have to contact Telkom on a daily basis and sometimes it takes an hour to log a call just for them to close the call when Brent gets the call. I am very disappointed in the service I've received from the Openserve team as they are unprofessional in all aspects.