Unable to reach 1mbps internet speeds on Telkom Mobile

Since 9 June 2019, I have been experiencing slow download speeds on my Telkom mobile internet - the download speed on my wifi router AND my phone can barely reach 1mbps. I live in the Sarepta, Kuilsriver area and for some reason, no one who is on Telkom mobile can access the internet whilst in my street - IN MY STREET.!!!!!! I have called the Telkom helpline (081 180) a record 8 times since 9 June, and I even logged a case with them on 3 July (yes, that is how long I have been experiencing these connectivity issues) which they promised the technicians would call me within 72 hours. It is now 9 July and I have just chatted with a consultant on their chat forum, who advised me that 72 hours have not passed yet and that the technicians will only come back to me after they have investigated my case. HOW LONG DOES IT TAKE FOR THE TECHNICIANS TO GIVE FEEDBACK ON A CASE? He confirmed that he could not tell me when this will be as there isn't a turnaround time for these cases. I am at my wit's end. If I do not get feedback from Telkom in the next 24 hours, I am cancelling my contract with them. ALL MOBILE CONTRACTS. This is unacceptable as I am unable to access the internet at home - whether I access it via my WIFI or my smartphone.