Without knowing more about the type of azaleas, their age or growing conditions, the most common reasons for failure to bloom are pruning wrong time of year, too much shade, drought in summer when flower buds are being set, and sometimes over-fertilization with a high nitrogen fertilizer will lead to vegetative growth in lieu of flowers.

Thanks morz8, that sounds right to me too.
The friend gave me only the information I gave you.
I will pass this on to her & maybe find out the type, the age is around 5-6 years from cutting.