Unhappy and very dissatisfied

I have never been so frustrated in my life like am with this company right, a whole 3weeks without internet yet I have paid because they bill in advance, you call till your airtime runs out you email all you get is an automated response when you finally get through to them by luck and ask them to call you back they agree but never do, the worst of it is that I work from home and can't afford to be without internet, now am buying data so I can work yet I paid for wifi.