Basically don't take so serious about the promised response within 60 days by phone teller. She is assigned this job to handle mass apllicant's inquiry by giving you a decent promise. Nothing she can do to affect or change the destiny of your case setting at corner or *****' desk at immigration department. I had called in three times, nothing happened within the sequent 30 days after phone was hang up.
The only thing I feel strange about your input is 60 days which is definitely different from the term of 30 days I got from phone teller. When did you call?