NEVER EVER HAVE A CONTRACT WITH VODACOM

On December 2014, Vodacom sent me an account of over R5000.00.. In Feb the following year they sorted it out. Was for internet usage. March this year received a bill of over R11 000.00 for the exact same reasons. They immediatly turned of my cell and internet usage account. After back and forth correspondence we came to salUTION n they will credit R10 000.00 if I pay the balance of R8600.00 , DID IT. Now its time for my upgrading and now I have been blacklisted for internet usage, which is untrue. They charged me R2000 for 4 days of internet usage!!! THEY *****ED UP MY ACCOUNT, SAID I HAVE TO WAIT FOR 90DAYS BEFORE I CAN UPGRADE. DUE TO THE FACT THAT THEY F%& UP MY ACCOUNT.. NOBODY CAN DO THEIR JOB!! CANCELLING MY WHOLE CONTRACT THIS AFTERNOON.