OB gyne appointment at IMC

Do you have any idea how to get an appointment in this hospital? (IMC, International Medical Center) I've read good reviews about their OB gyne department.
I have been calling their number indicated in their website but to no avail.

Hi, yes that's a big problem there. Keep trying and they will finally respond. I remember it used to take me 30-45 minutes and sometimes even an hour to finally get connected. They put you on long holds. However in your last months you can make the appointment for your next visit at the department( no need to call and make appointment). Sometimes you can also get the appointment via co-ordinator at Ob Gyne by convincing them of some urgency.

Thank you for your response!
Appreciate it! :)