Hello again, Kathryn, and thank you for providing this additional information.
They could typically charge you more if you exceeded the volume or weight they agreed to move in the contract you signed, so it is not possible to determine your rights without a copy of the contract. Since they are refusing to provide that to you, you could file a complaint with the BBB and state consumer protection agency
. If they wish to protect their reputation, they should respond appropriately and provide a copy of the contract you signed.
Since you are under time constraints though (because they are threatening to dispose of your items if you do not pay an additional amount), it will likely become necessary to pay the amount being demanded just to regain possession of your belongings and then review your contract to determine how much in damages you have sustained as a result of any breach of contract they committed.
If they agreed in the contract to move all of your items and they are now failing to do so, you could file suit in small claims court for the additional monies you were forced to pay them as well as any other foreseeable costs you incurred as a result of their breach.
I hope this helps clarify the situation for you. Please remember to rate my service once you have all the information you need so I will be compensated for my time from the deposit you posted with this website. If you have any other questions, please ask me – I’ll be happy to respond. Thank you!