CELL C very unhelpfull with data sims

I am very disappointed with the service from Cell C. My Sim is no longer working. I purchased a new sim and the packaging said that I would be able to dial 084 135. Firstly I tried to dial that number from a Telkom number roaming on MTN and the call was automatically cancelled each time I tried to phone. I then got through to the help desk on a Vodacom number. ONLY TO BE ADVISED THAT I HAD TO GO INTO THE BRANCH AS IT WAS A DATA SIM. This is totally unacceptable as I am 70Km away from a branch and it's the long Easter weekend. Now I am unable to use my data this weekend. I have 85gigs remaining on an annual package. I find the fact that Cell C is not able to verify a data sim over the phone very unprofessional and will never buy there products again