Beyond Frustrated

I work with Deceased Estates at a Chartered accountant firm, and can say that MOMENTUM is by far the worst company I had to deal with. A query that should of taken a few days to fix (an error from Momentum side) has taken 5 months. I have all the details of Brenda from Momentum who submitted a Tax return and used the incorrect code when submitting to SARS, she reads my emails, shows no interest, doesn't reply, pathetic really. I have now for the 100th time sent her a email again today, which im not expecting any reply from, if there is still a person from Momentum who actually knows what they are doing and how to fix the problem, to please contact me.