Rent a store slack service

Terrible service from the head office!! A few days ago we called rent a store honeydew and informed them we want to cancel the storage unit as we are moving to a new home and won't need the storage any longer. All Was well and they even offered us a truck to help us move our good from storage to the new home. They charged us R700 rand which we had no issue with... Today we called just to confirm that all is in order. To our surprise they said they cannot remember the Arrangement that was made, and also now suddenly the truck they were going to use has mysteriously gone out of service and they don't know how long it will take to fix... And now they only have a big Truck to help us at double the cost??.. This is unacceptable. Also we would not have known anything of these changes had we not called. Rent a store must come up with a solution to assist us as this is their issue not ours. I would like a. Manager to call us and help us out. You can't just sweep this under the rug and tell us you suddenly done recall the agreement.