UNABLE TO CANCEL MWEB ACCOUNT OF DESEASED LOVED ONE

Been trying to cancel a subscription of my father who was deceased in April 7 months ago and unable to get hold of anyone on their landlines and unable to email them because one doesn't exist? It is hard enough trying to deal with the loss of a loved one but to deal with such poor service and get threats on SMS to say they will hand him over? Bear in mind I am sitting in another country unable to go to their offices. MWEB should be ashamed of themselves. This has been my experience.