Upgrade and billing

[IronPhone]

My wife and I have a plan with multiple family members on it. Her phone was having charging issues in September so she went to our local Verizon store. Their suggestion was to upgrade to a new phone.  (They could have simply suggested a wireless charger). 
supposedly our plan with the upgrade would have only changed by a dollar and we were given an estimate showing this. My wife accepted, which turned out to be a major mistake. 
since then, the bill has gone up drastically and every attempt to fix the problem at the same store (another store said it needed to be solved at the same store because they would be the only ones to know exactly what was done) has only created more issues. 
First the bill went up much more than the quote. We tried fixing that and it only changed by a few dollars. Next they changed my plan to fix it, which removed Disney plus and my wireless hot spot even after ensuring us the fix would not change anything. Lastly they reactivated those both assuring me there would be no charge and now we’re being charged for both. They weren’t able to check if we had protection on our plan prior to the original changes and thought that might have been the issue. I checked and we did have that before the changes so that was not the billing issue. 
Soon after this all began, my son’s phone stopped working.  In order to work  it had to be restarted every time he wants to make a call. They said it was an internal phone problem and would send a new phone because it was under warranty. They never sent the replacement and we were then told if we tried to replace it while the phone plan issues were going on, it would screw up the billing even more. 
I really need to speak to someone who can fix this billing nightmare. Our account needs to be fixed, credited for the months of mistakes, and adjusted to the original quote they gave us.  If we knew the price was going to change my wife would have simply purchased a wireless charger.  My son’s phone needs to be replaced since it is defective and he needs to be able to stay in touch with us after school. 
fyi I will never go to my local store again request that they be retrained. 

[vzw_customer_support]

We're sorry to read about the billing concern you have had since you made your plan change. We want to take a look. We'll be sending a private message. ~Peter

[IronPhone]

Thank you for responding.
I have attached a copy of the quote we were given that started all of our problems.

We were quoted 430.43, which was $3 less than we were paying. This is why my wife accepted the new phone instead of just getting a wireless charger. Since this visit, our bill has gone up multiple times and we have lost add ons like Disney plus and wireless hot spot when they’ve made changes. When they fixed the two above issues we were then billed for them as new add ons when they were already included in our previous plan, which we were told would not be affected. 
First, we really need the bill to be what we were quoted or within $5 of the quote.  Second, we need the extra charges we incurred due to these errors over the past 9-10 months to be credited to our account. Lastly, we would like my sons phone replaced, as we were told it was an internal sim problem that was under warranty. 
Please let me know if you need further information. 
All of our problems are from the Verizon in Milford, Massachusetts. 
thank you,

Brandon