Absolutely Pathetic Service

Kathy Naidoo @ Vodacom Cancellations centre, cancelled the incorrect number off our business account. She requested that I purchase a new contract SIMcard & send through to reactivate the number, after sending it, 4 days later still not activated after several emails & phone calls. This is a business line of which we are losing money on now. I cannot get hold of her or her team leader and just told to keep emailing ********** of which I anyways get no response. If this is the case, how do I sort out Kathy Naidoo's mistake?