Telkom bad serve

We are a client of telkom for 30+ years. We have never been so disappointed in Telkom as this last 2 months. They force migrated our ADSL line to fibre. The people from Openserve just pitched up at my practise on the 3rd of July 2023 to do the migration. We did not ask to be migrated. Since the force migration was done our internet is very slow. We are suppose to have a 75mbps line. Our internet is 0.14mbps. We reported the problem several times and still the problem is not solved. Telkom put us on a year contract for this fibre line. No one informed us of any contract and I did not sign for anything. When the people from Openserve was done with the installation we did not receive any paper work or jobcard. I had to go and buy a router by a shop as the technical guy from openserve informed us if they do the installation our internet will not work until Telkom sent us a router. We can not go without internet as we are a medical practise and all our sistems work with internet. The next day Telkom sent us a router. Now we have 2 routers. When we spoke to the people from Telkom on the 29th of August 2023 they advised us that we are on a 30GB softcap and that we have reached the limit that is why the internet is so slow. Our internet is on 0.14mbps since 1st of the month till the end of the month. I trust that you will be able to assist me with this problem and that it will be solved as this is not acceptable. Thank you