HI Sejal,
1)first of all collect your appointment letter anyhow. because if you leave this job after say 1 year or so...next employer will always ask for appointment letter...so don't miss this.
2) as you are only one month old.....i would suggest that do not take any radical step like "quiting". try to understand the situation and be calm,hardworking and focused. don't mess up with your boss. i would suggest try being manipulative.because been assertive with this kind of boss will not take you anywhere. I have also faced such a situation. i tried my way out by sugar coating my demands...like in your case you want to know about current opening in ur company,etc... i would keep on asking for details in a softer/polite way again and again till he realize that i am genuinely interested and am not going to give it up.
But top of all if your company holds good brand in industry then stay there for 1 year atleast and then change.get a good name on your resume.
but if your company is not holding any good brand name then just quit ASAP, because at present you can give reason that your current company and employees are not good..so you are changing,but later on after few months it would be difficult for you to switch over. next employer will ask you that why you want to change just in few months of stay.
As you are experienced enough in recruitment, try to be smart in your approach.
regards,
Shivani