Parental block

We have been to two different Vodacom Stores East rand mall and Eastgate to try get this parental block off my Dads phone and no one can help us get it off. Firstly we have called Vodacom numerous times to find out what the problem is and not one call agent could tell us it is the parental block on the phone they just keep asking us to switch the phone off and on and choose a different provider and then choose Vodacom again then eventually we took the phone to the Vodacom store in east rand mall and they told us it is the parental block and they said they took it off and we needed to wait 24 hours for it to update. The phone worked for a day and then the parental block was back on. We then called Vodacom they said the problem is with the actual phone and we should take it to Samsung. We took the phone to Samsung who were just as unhelpful as they said they need to wipe the phones data and reinstall the software but were not prepaid to help with a backup of the phone and needed our contract of the phone or they would charge us R450. So we took the phone to the Eastgate Vodacom shop and they said it was the parental block on the phone which they took off again and told us to wait for 30 min if it was not off we could come back and they would look at it again. Which we did and when we went back it was still not off and they had to take it off again. Today it is still not off and we can't keep on going back and forth the whole time. We need some higher up to resolve this issue as this is now really pathetic. We don't even know how it got activated in the first place. About 10 phones calls later and requesting to get it removed off the phone 3 times now we still have the parental block on the phone. Very disappointed in the service we have received.