May you please stop with your debits

Dear MTN<br> <br> On the 1st of September i called 808 to cancel my contract, i was told that i can only do it on the 9th. on the 9th i called and cancelled the contract. to my surprise after my last debit on the 15th September MTN sent me another invoice for the same number i cancelled. on the 21st of September i sent MTN an email address requesting them to cancel my contract and correct the bills they were still sending.<br> <br> Today the 16th October 2015 MTN deducted money for the cancelled contract and this time they deducted more money than they used to before my contract expired. i have never skipped a payment with MTN.<br> <br> May you please refund my account with the debit that went through yesterday as i do not even have that sim card anymore.<br> Please correct your funny way of milking people what they have worked hard for. I can not be having debits for things i didn't use and i didn't sign an extension for.