Vodacom unpleasant service

Good day I am greatly upset and disappointed with the service I have received from Palesa Khanye from cellucity Clearwater mall. I have been a loyal vodacom customer for over 15 years. It was the 5th of December 2018 when I took out an additional data contract onto my existing account. It was a 100 GB package with 50gb day n 50gb night. I then depleted the data 20 days if having this contract. I then proceeded to go to cellucity to request Palesa to proceed with a deal cancellation as the data is insufficient and I would like to take out a higher package with vodacom 200gb which is an increase in my subscription fromR699. 00pm to R849. 00pm Palesa refused to give me a solution and says I need to stick it out having 50gb data pm fir the next 3months then only can I migrate or change a package. I dud seek alternate advise from other vodacom stores who did mention a deal cancellation is possible as the line is only about 24 days old but Palesa was unable to assist or give me a current solution I feel I have not been assisted as a loyal customer to vodacom furthermore the system dies not even have my signed contract loaded on. I am also due for an upgrade with another line and I'm starting to question if I should just cancel contracts n move sps. Please can I have feedback or a resolution as soon as possible. Thank you.