Really bad service from Telkom

Good day. Telkom does not have ANY after service what so ever. We app**** for a ADSL wifi line on 10 Septemer 2019. We battled with them to come and install and get it up and running for nearly a month. We literally had wifi for 1 month. I was told that I must get a tv box and a simcard with 1G data every month. Today I found out that is not true. November 2019 we phoned numerous times to report the fact that the wifi does not work properlly and the telephone also does not work. They eventually send some one. The telephone line worked for a few days and now it is not working again. I wanted to upgrade to LTE. They told me on 9/01/2020 that I can so I did. Today I phoned them to follow up on the order. Now they tell me that I can not upgrade because the tower is at its capacity. Telkom must now first upgrade the tower. I asked how long (when) that will take and they could not give me a date or time. When we phone 10213 and asked for head offices number not 1 of the 5 people we spoke to can give us the correct number. My husband asked a lady with the name Adel for her manager/supervisor to phone him back but up to know no one called him back.