Estate Late - LFJ Gill (Acc No ********** 35)

Morning

Am really struggling to get my late father in law's account closed. Prior to my sister and brother in law's departure to America, they advised us that they had closed my father in law's account, so I don't have any of this correspondence. However, as we are managing his email, he received a statement from Telkom with deductions from the credit balance, which indicates the account is still active. I then Googled Telkom deceased accounts, and emailed the required information to ********** No response. After a while, I tried another avenue on the Telkom website and was advised to email LSDanational@telkom again, which I did, and this time the mail bounced as the inbox was full.

What do I need to do to get this account closed please, as no one has contacted me either telephonically.