In the last 20-yrs there have been sufficient changes in treatment Cluster that a good review would be useful. In the meantime, see the PDF file, below. Lists the current medical treatments and some evaluation. So, compare your experience with this list as a starting point.
If it's a literal truth that none of the standard meds work for you--then we have the potential that you don't have Cluster but, perhaps, one of a number of disorders which mimic Cluster. See:
Link to: cluster-LIKE headache:
IN: "Medications, Treatments, Therapies --> "Important Topics" --> "Cluster-LIKE headache"
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The other major concern is that so many docs, and this includes neurologists, have meager training in headache disorders and most not much useful experience.
If you have the option:
LOCATING HEADACHE SPECIALIST
1. Yellow Pages phone book: look for "Headache Clinics" in the M.D. section and look under "neurologist" where some docs will list speciality areas of practice.
2. Call your hospital/medical center. They often have an office to assist in finding a physician. You may have to ask for the social worker/patient advocate.
3. Multimedia File Viewing and Clickable Links are available for Registered Members only!! You need to

or

; On-line screen to find a physician.
4. Multimedia File Viewing and Clickable Links are available for Registered Members only!! You need to

or

Look for "Physician Finder" search box. They will send a list of M.D.s for your state.I suggest using this source for several reasons: first, we have read several messages from people who, even seeing neurologists, are unhappy with the quality of care and ATTITUDES they have encountered; second, the clinical director of the Jefferson (Philadelphia) Headache Clinic said, in late 1999, that upwards of 40%+ of U.S. doctors have poor training in treating headache and/or hold attitudes about headache ("hysterical female disorder") which block them from sympathetic and effective work with the patient; third, it's necessary to find a doctor who has experience, skill, and a set of attitudes which give hope of success. This is the best method I know of to find such a physician.
5. Multimedia File Viewing and Clickable Links are available for Registered Members only!! You need to

or

NEW certification program for "Headache Medicine" by the United Council for Neurologic Subspecialties, an independent, non-profit, professional medical organization.
Since this is a new program, the initial listing is limited and so it should be checked each time you have an interest in locating a headache doctor.
Painful to read research shows many folks taking several years and multiple docs before they find the skill they need. Certainly, many of us have had this experience.