Child benefit stopped 31st August, Universal credit stopped 9th August

Hi,
My daughter (who is now 19) child benefit stopped as her course ended on 31st August. However the universal credit stopped for her from last UC date - 15th August (statement runs from 9th-8th). I have queried this with UC and they said they cannot pay partial payments. But as a single parent, it seems really unfair that this happens. If I had earned more that month, they would have changed amount, but not if your dates do not quite marry up.
I know there is possibly not a lot I can do, but wondered if I could challenge it?

Hi,

Thank you for getting back to me.
Yes, the date of course ending is correct; DOB: 8/10/2006

Hi, for some reason, I cannot change my username. I did try in my profile, but it's locked.

warm regards,
Jenny

Hi David,
Thank you for getting back to me so quickly. No it’s the payment from 9th August to the 8th September, they won’t pay as they say they cannot pay partial payments.

Warm regards,
Jenny