Estate claim

I'm writing this with tears filled because of the poor service I am experiencing from ABSA. My mom recently passed away and had a will with ABSA so they are the executors of my mom's estate. I have told them countless times that my mother was the breadwinner and that we are left without food or anything while they are taking their sweet time. If I don't call them, they don't call me or write me back, I sent an email 2 days back and it still hasn't been responded and I don't have feedback regarding the progress. We forced to suffer while they are withholding my mom's money.