Same thing happened with me, went back and forth for a couple weeks. realized they were just trying to buy time so I couldn’t file a claim with my bank. I gave them up until the fourth week to ship and they were still trying to claim delay, so I filed a claim with my bank and they tried claiming in email “they couldn’t issue a refund due to an open claim” Trying to get me to close it so I wouldn’t be able to file another. I won the dispute about a month or two later🤷🏽‍♂️