A Bay Area resident went to social media to show the damage Southwest airlines did on both of her wheelchairs. According to the woman the staff dropped and broke her wheelchair after 5 minutes after she had told them to handle it carefully.
Apparently, the lift malfunctioned, and it slid off the wheelchair lift from 10 ft above. In my own experience, that never should have happened if they were mindful enough re-lock the emergency brakes as soon as they rolled it on the lift.
She also mentioned that when she was given her manual chair, the wheels were damaged and bent, and had to rely on someone to push her. Southwest did reach out and will be paying for the damages but the more expensive wheelchair will take about 4 weeks to order.