hi my amazon account manager is not replying or calling, what can I do?

She called me once while I was out of the country and I told her I'll need to get called again days later when I come back so I don't get an insane international phone bill, and she said it's fine just give her a date by email and she'll call back. No calls yet no reply.

Why even employ account managers if they don't even check our emails or call us