EDGARS OWE ME MONEY

I paid by mistake too much money into their account. I urgently need the money back. I cant get hold of anyone that can help me. The call center staff is friendly and wants to help but cant . They take messages and transfer me the " the right department" but no joy. I am frustrated. Been a customer for 25 years. Never missed a payment. Now thowe me money and I cant get hold of anybody. No response to emails. Nothing