Capitec bad service

Capitec refuses to change ny debit date to the last day of the month, they decided to put a debit date of the 29th even thou I told them I get paid the last day of the month and had my payslips as proof.... I called the client centre and was told if my salary reflects the 1st day of the new month they would push my loan into arrears. I AM DISAPPOINTED IN HOW THEY HANDLED THE ENTIRE ISSUE.