Inefficiency of call center agents

I'm so ****ed off at again having to deal with your call center agents who find it okay to give incorrect information without verifying. I specifically called through last week to find out what the procedure would be to cancel my scheduled migration since it was only communicated to kick off on the 1st of Feb. The agent I spoke to clearly stated that I could call in ANYTIME before/by the 30th and this cancellation would be processed immediately just by my phone call. I then made the call yesterday, 28th Jan to withdraw the earlier requested migration to keep my current package - red advantage. Jack assisted me on this also confirming that it would be cancelled, meaning I will not be billed the R1909.50 incl VAT on my Feb invoice. He informed me that I'd also receive a cancellation confirmation by sms. I didn't receive the sms hence I called again today to find out if this has been processed. Speaking to Busi I got confirmation that this was not the case and she then told me that sometimes it's impossible to remove items on invoices after the 25th which puzzles me if the invoices are only closed off on the 4th of every month. I need this fee reversed and not charged on my Feb invoic