overdue payment

<p>About 3 months ago my husband lost his job and i had to take over most of his payments as not to get blacklisted. Every month up to now ive been paing his 2 vodacom ontracts in full by end of april we decided to cancel the 1 and asked vodacom to sdnd us a quotation as to how much it would cost. They sent it through. I paid it and sent a fax with the signed copy and pop . And now im recieving an automated voicecall saying that im owing them R1400 !!! Ive bin trying to get vodacom to help me they say they cant i must phone theyre accounts department whivh is only open from 8 to 5 which means i wont be able to phone them because i work from 7 to 7 and am not allowed to use mycellphone during these times. How is it possible for me to owe them that amount of money if ive paid the account in full every month???????</p>