Worst service , and Agent refuses to unlock my lines!!!

I have been with Vodacom since 2006 and in all honesty I have never experienced this until today .So I called to make a payment arrangement sometime last month for the 23rd of november of 1031 rands unfortunately I was unable to pay on the day however today I have paid the amount Today as per my arrangement with them. so my line was locked on Monday today after making payment I call vodacom @ 12:30 from my cell number ********** 749 forgot the name of the stupid consultant that answered informed her of my difficulties and that I have manged to pay the arranged amount and will make next payment on 23rd December as previously arranged. asked very nicely that she unlocks our lines and the money will be payed and she refused and now she is telling me that the arrangement I made in November is no longer valid . I find this to be very pathetic i really need my lines open today if a supervisor or someone who actually cares about customer care can call me urgently because i really need this sorted!