Not able to access mobile data

Iam truly disgusted with Vodacom at this stage, i upgraded my mobile data contract in October 2015 and once i migrated to the new package i am unable to use my mobile data, on 11 November i had a baby girl making it extremely difficult to keep on phoning the customer care line or continuously going in to a shop for assistance , regardless i have contacted customer services twice each call lasting up to 30min with no success, i have also visited Vodacom 4 U kollonade 4 times already, i have been told all things that could be wrong but stil no success, the device is not faulty it has been tested, on my last visit i was assisted by the data technician whom tried everything in his power to assist (great service from him) and then as a last resort he contacted the call centre which stated that the account was never activated and it will be done and i should be able to access my mobile data within 48 hours, this was in Early January and still nothing. Why am i paying for data i am unable to use for 4 months now, this is unacceptable, due to being on Maternity leave my data is important to do work from home, alternatively i have to use my husbands data incurring additional cost. Disgusted