Vodacom - worst service ever

I took out a contract with the Vodacom in Northam and it has been the WORST service I have ever received. I took out the contract in March whereby I was promised 60 Gb daytime data and 30 Gb night time data. Since March I have been to the store about 7 times and I have phoned multiple times because I am paying R560 a month and I am only getting 30 Gb daytime data and 30 Gb night time data, which is NOT what I signed for. Up to now I have lost 270 Gb of data. I normally do not post such things but I have honestly had enough because Vodacom is not fixing my problem and I am ready to move all my contracts to another provider.