Hi Nicole I did a google search and found a British couple who hire mobility scooters in Bulgaria this is the website http://www.mobilityhirebg.com they have an email address and also telephone numbers you can contact them on. Good Luck and have a good holiday.

Hello everyone, the website above not working anymore!!!
There is somebody else who hire out a mobility scooters to all resorts and cities in Bulgaria!
You can find on google search as Black Sea Hire Mobility Scooter Bulgaria!
They accept all method of payment and can make booking in front online and reserve it and secure it, because can be prepaid!
There is an email address and contact numbers on page.
Good luck everyone!!!