No Response from MTN

I received an sms from MTN saying that my account is in arrears by X amount. I logged into the app, where the amount doesn't even agree with the amount of the sms. My services are suspended, without any warning or a courtesy call to see if there is a financial problem or whatever the situation might be, not even being able to receive any calls or sms's. I make another payment to my account on the 11th, I sent 4 emails because I cannot even phone the MTN customer service line. I just get two of the same emails, saying that this is a corporate account and my email will be redirected. I asked what this meant, with no reply because this is my personal cellphone contract. I sent another email this morning because my phone is still not working and yet, nobody from MTN has called me to solve the issue. If the problem is on my side, by all means, regarding to payment or whatever it may be, but don't just suspend my phone and don't let me know why this happened and not respond to my emails. My phone hasn't been working now for 4 days. I have kids and customers, and my husband is away. I need my phone to work.