no connection from the 10th of jan

We had our line installed in december, up to 10Mb. We could only sync at 5Mb. We moved into our house on tje 31st of december but the line get dropping packets, 40% of the packets. I requested telkom to drop our speed down to 4Mb on the 10th ever since then we have had no internet. The line sync's tries to auth then drops and resyncs. I have tried multiple routers and isp's, all are the same. I have escalated the call and had to relog <br> It. I have spent the entire week trying to get through to telkom to find out what is happening but the 1 person they have in their call center is never available. Have been on the phone now close to 3 hours with no answer. Please can i have some feedback and etr.