I am sorry to hear that your current BP meds are not bringing down your blood pressure and you say that it is still high. Are you comfortable sharing what your BP numbers are? Does your doctor who prescribed the BP med know that your numbers are still high?
If not, I would certainly phone his office and let them know what the numbers are and ask if a change in BP meds might be helpful.

Please know that a second opinion is always appropriate if you have concerns about your health and the treatment being provided.

Have you considered a second opinion, @ronn3?