No data and airtime after upgrading

I upgraded 2 of my contracts in August. Both contracts are exactly the same. However with one contract I did not receive any airtime or data. On contacting vodacom, the consultant told me that the device was using data in the background. I found this difficult to believe as 5Gb of data disappeared overnight. On further contact with Vodacom, today, the consultant advised that the data was not loaded for this month and it will take 3 days for a service call to be logged to rectify this issue. This is unacceptable. The consultant also mentioned that the airtime was used up due to an online subscription. However, when I followed the instructions to cancel the subscription I got a message saying that I am not subscribed to any service. This poor service is unacceptable. I cannot understand how the one contract is perfectly fine while the other contract has so many things going wrong. This needs to be resolved asap.