Telkom bad connectivity for 4 days

I have been experiencing bad connection speed for 4 days now. Can I get assistance. This can’t be due to the lockdown. I’m on a 20mbps fiber line, but I don’t even get 1mbps I get 0,62mbps speeds. Can this be sorted out please . I logged a fault and called numerous times. The issues gets fixed and it only lasts 2 hrs and then back to bad connectivity