Wrong contract Upgrade

I upgrade my contract on the 12 August 2022 from a 20GB anytime 20GB night owl contract to 40GB anytime 20GB night owl contract, but somehow Vodacom upgraded me to the same contract I had previously "20GB anytime 20GB night owl contract" but now they telling me they cant see that I did an upgrade on my end even though I have email from vodacom showing that I order and upgrade order number Order #*** that clearly shows the upgrade is soppoed to be for 40GB anytime 20GB night owl contract, now I was told to call ***4 for assistance the I was told to email "vadmin" for assistance now "vadmin" is telling me to call ***4 for assistance, why must I run around to correct a mistake that is clearly not on my end. They telling me they cant find the contract upgrade contract then why is the contract upgraded if they cant find the upgrade contract