Get an attorney NOW. Do not delay. Do NOT destroy that recording!
The type of attorney you need is called a "Personal Injury" specialist.
The establishment is on the hook for 100% of your medical bills, and you need to get something in writing to them IMMEDIATELY. (Possibly also for lost work and pain and suffering.)
Tell the attorney something like this -- "I was being escorted around XXXX property by
XXXX, an employee, on a golf cart, and she drove recklessly and I was thrown from the golf cart and was injured. I have thousands in medical bills because of it, and I'm losing work. Can you help me?"
Keep us posted, do.