Here is my previous post and solution provided by the verizon supports assisting me:
{edited for privacy}
In short, I was told my a sales representative a different price and was billed more by Verizon. The customer support here was been able to provide me a credit for one year, but I know that the contract I have with you do not end until February next year.
Per Mitchell, one of the customer support service, on page 1 I will be able to extend this credit until the end of my service with no problem. The original credit you gave me only lasted 1 year which did not cover the whole contract that I signed with the sales representative. I currently do not see this credit on my account.
Please, extend this credit until my contract ends.
Thank you for your help.