Shocking Vodacom service

Upgraded with Vodacom at the end of February. After a few calls I agreed to a cellphone contract of R229/month (confirmed three times with the consutant over the phone) with which I will receive 2gb promotional data each month for 24 months.

At the beginning of the second month of this new contract started the first issue. The promotional data was not loaded. After two calls the data was loaded, will see if this issue persists next month

Today when logging into my Vodacom I see that my bill is going to be R450+ after agreeing to a deal of R229 for the voice and headset. After a 10min call with the call center with zero help, they pawn me off to the upgrade department. After holding for another two minutes the line gets cut off.

This is really poor from Vodacom and nothing has been resolved. Why is the service so poor? Was must I be transferred between departments? Should customer service not resolved this and get back to me?