Telkom and Sell Direct - lies

I have been on a contract with Telkom LTE since 2015, and I was very happy with the contract that I had and I never wanted to upgrade. I was getting very good speeds and my internet was perfect. On the 20th of February 2023 a call centre agent (Kaafhief Adams) from Sell direct on behalf of Telkom contacted me and told me he has a better deal for me, which will give FASTER INTERNET SPEEDS than what I am currently(average 40 to 50mb/s) getting and it is cheaper, Kaafhief said I could reach speeds of up to 100mb/s. When I heard him say 100mb/s on LTE, that is when I made the decision to move forward with the new contract, I have the call recording as well as proof. On the evening of the 20th February, I tested my speed of the internet and I noticed that it was only going to 10m/s for up-load and down-load. When I called Telkom the next day and told them that I was only getting 10mb/s they said that is correct as my new contract is only a 10mb line, but I said NO! I didn't sign up for a 10mb line, I was told up to 100mb/s. I told Telkom to cancel this new contract and Revert me back to the package I was on, as I was very happy with my previous contract, it has been 3 weeks now and I have been struggling to get my old contract what I initially had reinstated. After numerous call to Telkom customer care and getting put on hold for the like 10mins and then the agents drops your call, the frustration is running very high at the moment. Today i called again, I got sent from Retention department , to customer care, then I get told there is nothing Telkom can do now, Me as the client now needs to call Sell Direct, who is the sub-contractor who sold me the contract and they now need to sort it out. After speaking to Sell Direct they tell me there is nothing they can do. I call must Telkom and sort it out with them. now I am stuck with a 10mb/s line which I never wanted and no one wants to help me go back to the package I was on.