Customer Service

On the 30th of July I have upgraded to Compact plus at the advertised discount of R460.00. When I checked my balance on whatsapp I notices that I am being charged R520. I called Multichoice to enquire and spoke to 4 different agents. 2 of them said the special ended 23 July. The other 2 said the special ended 31 July 2019.
I advised them that before upgrading I contact the Facebook page via the messenger service and was given a number to sms to in order to qualify for this special. I have also received a email confirming that im on the R460 discounted price. When calling for a 4th time I spoke to Sinaso and was told that I can just pay the R460 and the system would pick this up automatically.
Now my question is this, if your call centre cant pick up that I am on the R460 discounted package instead of R520, how is your systems suppose to pick this up. Clearly DSTV Multichoice has employed people who does not know what they are doing and they not even willing to assist or go the extra mile. Can Multichoice please contact me and confirm what the amount is I have to pay. Thank You.