Sprint review: fraud, advising customer of a "better" plan

Dec 2015
Westminster California authorized Sprint PCS store
Upgraded to the iphone forever plan at $5 month for being a loyal sprint user. We have been with Sprint for over 15 years.
James the sales rep instructed my husband that to get the best deal he would open 4 lines for flip phones (we currently have 4 lines on the account) and reduce our monthly unlimited data to 20GB as one of the existing lines has minimal usage. Our monthly rate would be reduced and the phones could be inactivated.
Unfortunately my husband went for it.
Wrong - first bill was over $400!
Tried to resolve with customer service over the phone we were instructed that it has to be done by the store.
Went to the store and James worked on it and instructed us to pay $344
We are not delinquent.
Called customer service again as we now have a bill for over $600 to include activation fees on the 4 lines, insurance and taxes. They suspected fraud activities at the store and would elevate the concern.
No resolution
Called the store again - spoke with Tatiana the assistant manager. She was at least will to help. All other avenues to resolve this and to try to understand what the sales rep was doing was met with dead ends.
We even got a call from India from Dolly who was trying to verify our employee discount since we worked for Chase Morgan, Well no we do not work for Chase. Again was this part of a greater scam?
This is a crazy and very unethical method of doing business. It is very upsetting and disappointing after being with sprint for so long.
No one wants to deal with this, We have been lied too about the elevation process and at this point I am not sure the bill is straighten out.
We cannot talk to anyone, we cannot work on the website as we are "delinquent" Sprint has clearly changed their attitude with regard to customer service.
James was no doubt up to something to cushion his numbers.
We need to have a full refund for the 4 additional lines ( why 4 flip phones?) insurance taxes etc refunded. We need to go back to our unlimited plan - and we would like James reprimanded for his actions. My husband trusted him as we were at an Authorized Sprint PCS store.
Judi Reiprecht [protected] (ATT Phone)