STUDENT LOAN MESS UP!!

My son's student loan application has bee a nightmare the past 2 years. After reporting the case on Hello Peter last year a lovely lady Monica Govender contacted me and we had this matter resolved in a weeks time. This year however me and my husband was declined due to affordibility. Which I do not understand. I am the surity on this loan for 2 years and never skipped any payments. My husband was approached by Standard bank for a personal loan up to R150 000. I was contacted by both the Credit Card division last week and the Personal loan department, stating that I was approved for credit increases by both departments. How do I qualify for a R6700 personal loan and an increase on my credit card, but do not qualify to pay the interest back on a student loan? This is just very bad.