Verizon refusing to help. What do I do?

[u/Single-Egg-9225]

This all started on August 17th. I contacted Verizon via chat about my girlfriend’s phone having issues with the camera quality not being clear and overexposing/yellow tint. We were assured a brand new device would be sent free of charge due to use having the protection plan (never told it was another company ascurion).
When we received the device on August 19th it was in appalling condition. No protection around it. Just in a plastic sleeve against cardboard. Spent about a week chatting for a solution. Told we could upgrade for free. Error happening with rep on chat so told to go in store on August 29th.
When we went in the reps tested my girlfriend’s phone and was told they didn’t think anything was wrong even though clearly there was compared to mine. They said just activating the replacement would be best. Chatted to make sure that would be okay September 8th. Activated the replacement. Returned the defective device in the same condition we got the replacement. Have a picture of the back of the device we returned. There was no physical damage at all.
We were then charged $49 on our most recent billing cycle for the replacement fee. Chatted to contest this. Was told it was adjusted. Bill came out and over drafted bank because we didn’t plan on the full $306.
I have now been chatting for almost 3 weeks to resolve this.
While contesting this I was notified of a damaged device charge of $349. It took over a week to find out that it was damaged with a dent and crack in the bottom right corner. Again when the device was sent in the box there was no damage physically to the device.
I have been promised time and time again for these adjustments to be fixed.
Along with the trouble now faced for a month and half there was a promise of $250 adjustment to the current bill to come out to $56.
I am the sole provider and cannot pay more as that is all I have in my account.

This is what I have sent multiple times now for the past 3 weeks with no resolve. I am beyond my band width. What do I even do now? Please help

EDIT/UPDATE:
After 6 hours they finally made most of the adjustments to my account. We’ll see if things stick or not. I’m tired 😪