Shocking service *********** all round

I app**** for a personal loan and was approved as a call agent by name of mtcini phakwago called me and sent me quotation via email and also went through telephiically in detail.she also asked me for my banking details and told me monies would be paid into my account 24 to 48 hours. I have now been called again by her and to my shock because there is a system error with Debi check she now advised me that the problem is with my income and expenses and it must go back to credit for re assessment.how on earth can an application go so far as quote issued via email and accepted by myself and then absa states there is a problem with my income and expenses.this is truly shocking service . I asked her if my application was at credit already and she confirmed it had been there.what has Debi check authorisation got to do with my income and expenses.