Unauthorised Set off

Unauthorised set off app**** to my account I am totally disappointed with the service i received from Capitec. I received a msg saying that one of my accounts was in a negative balance and they have app**** a set off- meaning they have transferred money from my account with a positive balance to the one with a negative balance and when i disputed this, speaking to a consultant named Santin they stated they cannot help me. I will be closing and taking this matter further 😡😡