Poor service pertaining to contract renewal

I called for a contract upgrade on Friday, 27 November 2020, and spoke to Granny Madibane. She concluded that the new contract is activated and I will get my new data and call minutes within 10 minutes after the ending the call, however 5 days later nothing has materialized. I called numerous times for assistance however I have been unable to get any assistance. Phone number that I need an upgrade for is ***.