No transparency to customers

I have reported my MiFi router to CellC in Soshanguve Crossing Mall sometime the earliest of February 2018 regarding the expanded battery that does not charge anymore.When I got there with my contract that I presented it to the consultant and she asked me why is my contract comprising only 2 pages,first page showing details of MiFi device and the second page outlining the amounts and premium of the contract deal.But when I requested the consultant who sold me the deal,I was told that he has left the organisation,and then the current consultant printed me a full contract that outlined even the terms and the conditions of the deal.So my issue could not be solved because the consultant told me that the device is out of warranty and the battery is 1 year warranty,but I was never given that document during the purchase.And furthermore there are lot of daily subscriptions activities that consume my data and airtime that I know nothing of.