Capfin ****** me

Took out a loan and made an arrangement to pay 1204.83 month. Now because i had an existing debit order. They took 1602.98. I have been calling looking for answers with no clear explanations about the extra 400 taken. I received an sms saying they will refund 305.... And what about the R95 extra. Spoke to 4 agent and Josephina hung up on me while I was still questioning. Zile invented interest charges that i was never informed of last month an top of it debit order was taken before 31 Oct which means on the 1204 everything was included. I am never taking a loan from these ****mers nxa😡😡😡😡 with rude customer service agents