contract cancellation a struggle

I have sent four emails to cancel my contract and it has still not been done.<br> <br> I sent an email on the 23rd of September to give notice to cancel my contract which should have terminated on the 5th of October.<br> This had not been done by the 12th of October and I had sent another email requesting a cancellation and this has still not been done.<br> A third attempt was made on 19th of October and a fourth attempt was made on the 26th of October. For all 4 failed attempts my reference number was # ***3 cellphone number: ***<br> <br> I am extremely frustrated with MTN and will not renew any contracts through them again.<br> Sadly my company De Beers has a group contract with them and I will be sure to mention my frustrations to them as well.<br> <br> <br>