Vodacom makes error on issuing upgrade and I must now loose out

I have two separate data contracts that became due for upgrade. I upgraded both data contracts using a Black Friday upgrade special end November through the Vodacom app. The upgrade special was for 50m anytime + 50m nigh owl time for R199 per month. Vodacom then sent me new sim card, I was unsure why and went into the Bedfordview Vodacom store to ask they check if the upgrade was done correctly as I do not want new phone number or additional contract, it must be a upgrade. They assure me I must not worry and my contracts would be upgraded and would become effective 1 Jan 2022. I went back to store as not correct, they inform me new lines were issued to me for the data contract. They said I must phone call center as they can't assist with online users. Call center says they can cancel those new line contracts but can't upgrade me to the one I chose as the special is past and can't be chosen. They only gave me choice to upgrade to other contact with less data than what I chose. My wife had the same data contact and upgraded at the exact same time and hers did work. I did not select a new contract but requested upgrade on the app, that special was only for upgrade.