Poor customer service

I sent in a dispute over 20 days ago and was informed by an automated response that I will be assisted within 20 days. After waiting 20 days I requested feedback and was informed that the attachment couldn't be open. They took 20 days to inform me of this error and when I dissatisfied with the service and requested to speak with management I was ignored by a consultant named Laura. I have yet to be contacted by management or Laura till date.