Change of marital status taking almost a year with no results.

My mother passed away December 2017 and unfortunately her death certificate showed that she was still married even though my father has been dead for 15 years. We handed in the death certificate to be amended. When I first handed it in I was told to call in 2 weeks. I did so and was told, no it takes 4 weeks. We are now in November 2018 and nothing has been done as yet. When contacting home affairs we are just told that the request is being processed. I have been emailing them once a week since we handed in the documents. They even opened a case for me 6 months ago but still nothing is being done. This is disgraceful. Something that should take 4 weeks is going on a year now.