Vodacon

My mother has a contract that she took out with Vodacom that included 2 mobicel cell phones, each with R220 airtime for R220, in January they phoned and asked her if she would like to upgrade her system to 200 minutes, 200 smses and 650 MB of date for R103 rand more, she agreed, (keeping in mind that she is a pensioner) she agreed to these terms. She cancelled the debit order and made arrangements to pay them each month on the 10th, ( the day that she receives her pension) she paid her first installment which should have been R329, she also paid her R329 in the beginning of March. They phoned her today from the accounts department stating that she is in arrears with her account and she needs to pay R772 to stay connected to the service. I phoned customer care to find out where all the money comes from that my mom needs to pay and she said that my mom did not pay the full amount and when I said that the full amount should have been R329, which she paid, they referred me to the rewards department, the rewards department states that they do not have the information and wanted to refer me back to the billing department, who has to host a conference call so that that information can be obtained. The issue is still not resolved and no one can tell me why my mom is this far in arrears. My mom’s email address is **********