Business ProfileforExpress Van Line

In December I contacted First National *** Lines for a move from ********, ** to the ****************. I was quoted $3100 for 585 cubic feet of truck space. First National *** Lines contracted my move out to Express Van Lines (EVL). EVL showed up to my home in ******** on January 6, 2024. EVL stated that the contents of my move totaled to 750 cubic feet of truck space which amounted to an increase to $5009. Which was impossible as I had disposed of many items and sent items to Goodwill. EVL loaded my items into a 26' Budget rental box truck. The truck was only loaded with my items. The truck was loaded to less than 1/3 capacity. There was also significant space above my items that went unused which is very important when calculating ** volume. As the total truck ** volume is of all useable space. Approximately only loaded to 25% capacity. Budget Rental truck states through their website and through phone communication that there trucks are roughly 1700 **. 25% capacity of their truck is 425 ** 33% capacity of their truck is 561 ** The ** of my contents were confirmed at time of loading AND delivery. I raised my concerns that same day with **** from EVL as well as the original moving company I had paid the deposit to. Days later ********************* the bills from 5009 to 4108, which is still much higher than the $3100 +/- I should have paid. I agreed to pay him the 4108 as I had no choice, as this individual had all my contents in his moving truck. I was held "******" to accept the lower but still inflated price. Now that I have my items, I can attempt to recover or at the very least expose his business practices. Therefore I am seeking a refund of $800. Apart from the aforementioned **** from EVL has tried to strongarm me to sign a form that would pay me $400 but I would need to remove the BBB review. Which I'm sure is quite illegal. He has threatened litigation if I win a chargeback with my credit card company or am awarded through the BBB platform.