Pathetic company

Im actually disgusted with this company My hubby had cellc contracts before he got retrenched which that never even help we had to pay to close it they refuse to give us a paid up letter for the first contract for the second contract that we had with them they sold the debt to Nds after paying NDs R5000 they then sent it to Nimble however we were not aware of it. We was told by NDs that we have to pay R800 and now we phoning Nimble they saying we owe them R1500 im done im sick of this damn company!!!