Feeling Powerless

I upgraded my phone in October last year. Since then, I realized that I could no longer access my contract online as I used to on MTN Active. Long story short, I have been calling and emailing customer care, MTN Active, I have been requested to send screen shots of my computer when I try to log on, I have tweeted to MTN, I have done everything possible- There seems to be no help from MTN. As it stands, I cannot log in to my contract, I feel like I have no control of my own contract.