different period promotions

I just had a booking which is 15 days   with different promotion period...As far as ı see the daily rate was calculated as a regular price without promotion.

I called the customer service and they said that they recently changed the settings whıch if you do booking and it contains 2 different period promotion date you will not be able to get promotion.

Let me give you guys example

15 days of booking has 19 days %35 discount and 5 days %40 discount...And they don't give the guest any promotion when that happens.

Did it happen to you guys?

Please let me know

Kind regards

Hakan