Hurt, disappointed and very frustrated

I wish there was a minus rating, I'm recently took up cell c contract which I had paid two months. Haven't received my itemized billing despite phone in to request one and trying the app to send one as I need it for reimbur*****t for business calls that I make. I took up a contract phone only to find out later that the free minutes that one buys while using prepaid to make calls to fixed lines cannot be used on contract. Quite inconvenience and that was after numerous calls to cell c customer care. The cherry on top is that recently I'm struggling like really struggling it's almost getting me into trouble with my boss cause half of the time my phone doesn't have network so one get hold of me, clients are complaining it's actually putting my job at risk. Today for about 2 to 3 hours my I had no network at all, missed business calls. Got to work and used a colleague's phone to phone the customer care, was asked almost 10 security questions like alternative number, invoice amount billing address. I explained about the that I'm not getting my statements, gave the amount that was debited on the 25th of march which I checked on my banking app cause the guy wanted the exact amount to the cent. Only to be told that i failed the security check and will have to call again. I explained that I'm using someone's phone, I do field work I can get stuck and won't be able to call for help. I am a single mother who has children at school who whose phone has to be available in case of emergencies. All I wanted was to be assisted with network, I doubt that that poses a security risk to anyone. I just want to be able to do my work, without network I can't do that. The guy said sorry you'll have to call back and speak to another agent. I'm hurt, I'm disappointed. If I ever have enough money I'll pay cell c off and part ways with you guys forever. The biggest mistake I made was to port my number, I had issues with Telkom and all they asked was the type of the phone took me through instructions and that was it. I gave all my details, I'd number home address email address bank I'm sure the guy was short of asking me for my salary at the time of the application. If I have to remember everything that I filled in on application form then I don't stand a chance of getting assistance at all. To think I was considering cell c for data contract, glad this happened before I even start with the process