Janet Tunstill did not get home from her morning appointment until midnight
A woman from Rotherham has said she feels "disgusted" it took nearly 10 hours for an ambulance to take her home after dialysis treatment.
Janet Tunstill, 58, uses an electric wheelchair and was told she needed a special ambulance to accommodate it.
Mrs Tunstill's treatment at Sheffield's Northern General Hospital finished at 1400 BST on Tuesday but the ambulance did not arrive until 2330 BST.
The Yorkshire Ambulance Service has apologised for causing her distress.
Mrs Tunstill suffers from diabetes, kidney failure, lymphodema, asthma and is bed-bound at her home in Brinsworth.
She went to the hospital on Tuesday afternoon for dialysis treatment, which she has three times a week.
She said: "Everyone else was just coming out and walking to their ambulances and off they go, and I'm still sat there.
"I am absolutely disgusted, everybody that I spoke to said it's atrocious, both staff and patients.
"There's no way I'd have sat there waiting if I could get a taxi, but I can't, because I have special needs."
In a statement, the Yorkshire Ambulance Service said: "We would like to pass on our sincere apologies for the distress caused to the patient and her family as a result of the delay to her homeward journey.
"One of our managers has visited the patient to discuss the matter and we will be putting any necessary measures in place to ensure this does not happen again."