Unpaid maintenance for May

I am Nompumelelo Junerose Maphumulo of ID Number: ***. I receive maintenance funds for my grand daughter on the 17th of every month, from the Department of Justice. But I noticed that on this month (May) there has been a delay because till today I have not received any amount from them. Is there a problem on my account or are there any changes that I was not made aware of?