This is *****ing, period

I took a deal with you in jan or Feb then within a few month I was hit with an increase and decided to cancel and was told it will cancel end of May even when the notice was given in April but now I see the debit order was more by over a 1000 rands even when I am on month to month and didn't even take your router. This R1 483.21 has since been reversed cause even on the statement you don't say why the extra charge