*67 Dial Tone Confirmation

When accessing "Caller ID Per Call Blocking" *67, I get a stuttered dial tone (3 dial tone interruptions) followed a higher pitched tone. Then this sequence keeps repeating until eventually disconnecting. It does not go to a normal, steady dial tone after the stuttered dial tone, which is the way worked for years when using *67. Has anyone else experienced this? Were you able to get it corrected?