Had a stress test done in January got a call in Ap...

Had a stress test done in January got a call in April saying somehow I fell through the cracks and there was an abnormality now I need a nuclear stress test...3 months later! Been trying to talk with nurse for several days regarding the results and another issue. She finally calls this morning and leaves message she will not be in office today wants me to try back again on Monday. The track record on returning phone calls is terrible. Multiple calls and messages - no return call. Horrible!