double deduction from capitec

i am ver much dissappointed in capitec bank.....they deducted twice this month ,now i have been calling for 4 full days ,they tell me i must give proof that the money jas been deducted from my capitec account..the very same account they are able to see ,the money is gone twice to them.....capitec should close down its doors because everyday some1 is complaining about missing money and they giving me a run around