Dangle the carrot but you don't qualify???

I bought an electronic device (iPad) through FNB 2 years ago and completed paying it off in December 2014. I received a letter as well as a sms from FNB to let me know I can apply for a device which I have subsequently tried twice via my FNB profile as a Platinum Account holder. Not sure why but have been declined twice. I find this very weird as I was sent the communication from FNB to apply and then when I do apply, I get decided for reasons that aren't known to me. I paid off the first device without any problems, no late payments, no arrears but for some reason I cannot get a second device. Think it is like dandling a carrot and then not qualifying? Think it is a shame and false pretences are made by FNB. Very disappointed