Vodacom

I have been using Vodacom Fibre since March 2020. Since Sunday, the fibre's speed dropped and I M unable to access all the programs on laptop. After confirming with my company that it is not a network issue, I called Vosacom on Wednesday to log a call and was advised that I will get a message that the call was logged I called again on Thursday and was advised that the call was never logged. I downloaded the vodacom app and logged two calls, one for the speed being slow and the other to upgrade my package. Vodacom called me sit-in minutes to upgrade my package but I am yet to find out why the speed dropped. I called today threatening to cancel the upgrade and my current fibre contract. I received messages to confirm the migration but still no explanation why the speed dropped