I think I need to find the funds to just get new batteries

I think I need to find the funds to just get new batteries for my older wheelchair (about $400 ea n it uses two batteries) Seeing I can't get my new chair replaced for 3.5 years and mean while, while I fight/plead/beg to get the newer chair repaired I need to be able to be mobile... I plan if I do have to wait 3.5 years to get anything done on the newer chair I want it REPLACED period!!! Seeing I don't trust it now and if I have to wait 3.5years for action I want a new WheelChair!!!