Disappointed /Angry

I had used vodacom my whole life. They sent me an phone without my consent and I returned it. They called and i told the i could not afford. They've since been making deductions for the phone which they have. It's more than 6mnhths now. They want a payment of approximately 7k for me to terminate the contract I have with them. They are such *********s because, 9 months back I learned from their Savannah branch that they upgraded lines which I don't even have or use. On switching banks, they terminated my line for years but they still don't refund. Their business is not built on ethics, extremely disappointed.