Shorter loan term

I have an existing capitec loan account which I was given 54 Months to pay,and yesterday I went to apply for another cash on top of that loan and they told me that I do qualify but on a 48 Months term,i was expecting to be given a longer term since I have an existing loan because I will be paying a lot of money as a result I didn't take the loan and went to African Bank who offered me 60 Months and also promise to pay off my existing loan at Capitec,the thing is I never wanted to leave Capitec because I prefer them for loans,now I need to know the reasons for this shorter term as I don't have other debts that would have impact on negative on my credit profile and I am not listed,in fact my credit profile is improving everyday,i would really want to apply a loan today at Capitec but please sort this out for me.