slow connection

I have been to your vodacom outlet twice already, was told to do a sim swap yet problem persists, your tech guy called numerous times but still having the same issue 6 days later. I use this data for work and if I am unable to, it's a problem. For a week I have been trying to sort out the same thing but fail. Yes it may connect but it's extremely slow, I can hardly work or take teams calls. I even thought maybe the laptop is the issue but I have just confirmed that now. This is honestly unacceptable yet your debit order went through successfully. I have had my contract since 2021 and it only started giving issues recently and no one can assist, what am I paying for then