Sick service if u can call this service

I canceled my Vodacom contract that expired end of Jan 21 yesterday online. I received an sms that said I will get an email or sms to confirm it, and if I dont receive notifications I must cancel again. So tonight I tried again, but outside of business hours I can't do a cancellation according to the voice mail. But if I want to upgrade, I can do it immediately. The sms I received does not provide any reference number, my phone number or a reasonable period in which I can expect to receive a response.Here is the sms:

You will receive an SMS and Email with your exact cancellation or conversion date. Until such time, your Vodacom Contract Cancellation is not confirmed.