Please cancel my Vodacom Contract immediately?

My 24 month Vodacom contract expired in December 2015<br> <br> I have now signed a new 24 month contract with MTN and requested my number to be ported<br> <br> I am trying to cancel my Vodacom contract so that I dont get billed anymore by Vodacom from February 2016 period<br> <br> The cancellation department on *** cannot cancel my contract because my number needs to be released by the port department on ***.<br> <br> The port department cannot be reached and I have been trying to contact for 2 days now<br> <br> Please cancel my Vodacom contract with immediate effect!!!<br> <br> I will not spend one more second trying to contact you on 082 111 or *** or *** because no-one seems to work at Vodacom!<br> <br> Please advise A.S.A.P with resolution?<br> <br> Yuval Tal