TAlk to your MD. MEDICARE MUST RENT ONE for you, while you wait.
it may not be pretty, or what you wanted in a regular chair, but your MD calling medicare will cut alot of slack. Have him give you a NEW RX for a RENTAL chair for a 6 month period of time, and BE SPECIFIC on the RX. Go to the wheel chair place and ta da! there ya go.
hope that helps.