Keeping me against my will

Vodacom, keeping customers against their will. I have been trying to Port my number to MTN, i am currently on prepaid but Vodacom has declined my port 4 times now because of apparent system constraints. Please note that this is ********* for you to keep me against my will as i want to move immediately, it is also against the CPA as well. can someone senior please attend to this and authorise my port from Vodacom to MTN immediately!!!!! this is sickening vodacom.