Do not upgrade you MTN contract Telefonicly.

My Mtn contract expired recently. Annelise Strydom from Mtn phoned me and asked if she can assist me in renewing my Mtn contract. My old contract was R331p/m. I said to her that i want the same contract without a new Handset. We agreed on R 299 p/m. Now Mtn is deducting R408p/m. I Sent Annelise 2 emails , asking her to correct this amount. No response from her.. I am very disappointed in Mtn for treating a loyal customer like this. .i did not agree on R408p/m .