My mother has passed please close her account

I keep on ringing Discovery and my calls drop. Then when I got through once I asked your consultant, Thandeka, to call me because of no airtime. She did. My mother passed away on 20 March and I was trying to sort out why there is a debit in her account. The call then dropped and no call back again. Please cancel my mother's account with immediate effect and do not try to debit another monthly contribution. I repeat, please close my Mother's account with Discovery.