TOP UP LOAN

I received and sms 13/06/2015 from Bruma Finance saying that they are happy with my good payment record and would like to offer me another loan. I did apply and they send me an sms saying the loan was declined due to the fact that they think I can't pay it back. But I have been with them for a long time and not once did any debitorder not go off. I had two loans with them at one stage and they received both payments by debitorder without any problem. I previously got a top up loan from them. I ask them today 07/07/2015 to give me a top up loan then and they still declined. I have a existing loan with them of R708.00pm and the loan will be paid up at October 2015. The debitorders are going off everymonth and know suddenly they can't help me. If this is how they treat there good paying customers I don't want to know how they treat there bad paying customers. All I asked is give me a topup loan and they will get there payments like the last year or two. This service to good customer is unacceptable.