No response, no answer, terrible service

I registered our domestic worker early 2018 with the UIF, but they listed the incorrect surname for me. I have since emailed them ten times, and have waited on the phone for up to 30 minutes at a time with no answer. I can't login on the website either. They are doing our domestic worker an enormous disservice by not assisting me with the application, and I am hugely disappointed in their lack of service.