Fix this please

After writing you so many messages., calling , emailing , cancelling you still send me a bill of R1118.00 and you are sending ABSA to ask for money from me, guys please fix this, check history how many times I asked your to cancel , check when your router was actually used. I never used it as it never worked not even once , i still paid in October and November even when it didnt work, actually you are the ones that owe me a refund not the other way around.