account billed after cancellation

on 03 march I went to the Telkom shop in woodlands and requested to have my services cancelled. a fax was sent to *** for which I have the proof. on 19 march the services were still on and I phoned the call centre where the lady switched off my services immediately. I have the references. I got a new invoice and see that I am being billed for april and may. why ?????.<br> Please reverse everything up to 03 march as this is when the first request was sent through. <br> My services were switched off on 19 march and I could not use them since then. I cant pay for something I did not have.<br> Secondly, my line was of from 10 feb to7 march 2015 for which I should also get a refund since I could not use the services. I see a refund on the last bill but can not see for which period. please give more detail. I am cancelling the debit order at the bank so no more money gets deducted until everything is resolved. According to me Telkom owes me money.