Decrease internet speed on the last month of cancelation.

I've canceled my Vox contract and this is my last month. I've been billed for this month already, R919.00 for a 50/50 line. However Vox has seem to only provide me with a 2.56/5.65 line.... I have no words for the service they have provided thus far. This is just so disappointing but not surprising after all I've been through with Vox...