F* Verizon charged me TWICE for a headphone I never received

Ordered a headphone on April 14th with 2-day shipping. It never arrived. The portal has been stuck on "Shipped" ever since. I've spent over 4 hours calling customer service trying to get a refund. Still nothing resolved. Today I find out they charged my credit card AGAIN for the same undelivered item.

F*** customer care and whoever did this. Do you just keep people's credit card and charge whenever and whatever? Is your money free from sky?

Has anyone dealt with this before? What's the best way to escalate? Already thinking about disputing with my credit card company. I have spent so much time with Verizon customer support and don't want to give a d* to them anymore.

(Let's see how long this post can last)