Poor service from DSTV for months

For three months, we struggled to get a decoder installed. Eventually, a DSTV representative named Trevor managed to facilitate the installation after numerous attempts to contact the CEO, who seems to profit from subscribers without providing adequate service. The installation company completed the job, had us sign the job card, and left. Now, just over a month later, the DSTV service has stopped working entirely, showing an error (Error 48), which appears to be due to faulty installation. Resolving the issue has been an utter waste of time and money, as every call to the call center connects us to a different operator in another city, none of whom can offer a solution. According to them, we must pay out of pocket to have the installation checked, even though there is supposedly a warranty in place.