JPMorgan Chase & Co. Credit Card Complaint

JPMorgan Chase & Co. Credit card department,

Customer service / Customer relations Washington

I inadvertently overpaid my Chase Freedom credit card by $5000.00 and change. I contact the credit card company, they were going to issue a refund. I called back, and was told no refund had been issue and it was over $ - so they could not. I asked for a supervisor, was told a refund had been issue but they did not know where it was. I asked for an escalation and was told I would receive a phone call in 3 to 7 business days which I never got. I have been trying to deal with them by phone and or secure message, have been told repeatedly I was getting a call never did. Today I did receive a call and a voicemail message, so after over a month they are apparently sending the refund. The way this was handled and the flippant way they said we regret any inconvenience was absolutely disgusting. I lost over a months worth of interest on the money I had to wait for to be return, which I still do not have, they had no regard for the fact that perhaps I needed that money.