VODACON needs to catch a wake up

Since October 2018 i had a dispute with vodacon. Charging me for data SIX K. i HAD 50 GIG avail. well almost a year. blacklisted me etc etc. hello peter, everything i tried but all to def ears. They came back last week stating the credit that was due to me was not effected due to a system glitch. Still had to fork out NINE .5 K. Paid in full and now cant get anyone to send me letter to confirm account paid in full and clear my itc. They black list my name, their fault and i continue to suffer. What a nightmare. Now it will take another 6 months to clear my name. Unbelievable.