Monthly Charges without using the service

Good day Sir/Madam<br> <br> I have a landline in my house and I have not used it for the past 6 months, however I am still being billed for it. Last Month I settled some of the charges and was promised that the line will be closed and thus I will not be billed anymore. <br> <br> In the contrary, I have been billed once more and I do not understand why. Can some please help me with this matter. I believe I should not have paid in the first instance because I was not using the service anymore. <br> <br> Your assistance will be highly appreciated.<br> <br> Regards<br> Salome Mothemela