I CAN NOT CANCEL MY CONTRACT AND KEEP GETTING BILLS - NOT USING THE PHONE AS I HAVE EMIGRATED

My contract expired 12 Sept. I tried contacting the cancelation line from 11 Aug till 12 Aug. I left the country on 12 Aug for Portugal (we emigrated). I phoned 4 times and was put on hold for a total of 31 min and 24 sec. After my last attempt the 12th Aug @ 7:48 pm, I couldn't phone anymore because we were at the airport busy checking in. In Portugal I sent an email 16 Aug explaining I emigrated, couldn't get hold of them, attached screenshots of my call register showing how many times I tried to contact them and attached my airline tickets showing I left the country. Tshepo Mahlangu rep**** back asking security questions to assist in cancelling from abroad. I immediately rep**** with all the information. After 30 days (after eeceiving yet another acc) I asked on the same emial thread if the contract was cancelled.... no reply! On 3 Oct I received a reply on the same email thread from Zanele Radebe asking the same security questions as Tshepo to assist in canceling the contract. On 15 Oct I received yet another bill. CONTRACT STILL NOT CANCELED! MTN... PLEASE CANCEL MY CONTRACT AND DEDUCT THE BILL DEBT.... I WILL NOT PAY THE AMOUNTS!!!!