Here's your problem:
"yes i am in an extended 4g area"
Extended service areas are on a best effort service commitment:
"** Access the 4G LTE network within the Verizon Extended Coverage Area; certain conditions may cause your service to connect to 3G in this Area."
That means if it works it works, if not then the best VZW can offer is 3G. Most extended support areas are provided by partnering with 3rd party towers, not VZW owned ones. VZW does not make any promises to support a particular technology if it is considered to be in an extended support area. This is the nature of the beast.
You could have looked into boosters and antennas to amplify your 4G LTE signal, but those devices don't come with any guarantees. All they can do is work with the signals that area already in the area to begin with, a quick Site Survey would let you know if you are a good candidate for them or not. Now that even if you are you would still have disruptions as a result of various wireless issues beyond your control.
(new community alters the raw URL now for some reason, not sure how to override it yet)