TRAUMED 24 MONTANA HOSPITAL

My late ex husband was treated by TRAUMED24 MONTANA aka Montana Hospital. Hr passed away there and they keep on sending me email and sms's to pay his account of R978.34 and we have been divorced since 2019. I have send them countless e-mails with his death certificate as proof and yet they send me his account which state as follows

TRAUMED24 MONTANA: Dear DR Nel (Est) Late, your account is 216 days outstanding. Amt: R978.34 Please settle Standard Bank: ***, Branch: 051001, Account Holder: Dr van Niekerk and Coertze, Ref: 240. Contact us on *** or ***