You said, you dont know much about the HR practices HERE. It looks like you don't know about the HR practices anywhere. It seems you don't know that to follow up on your interview is a good professional way to approach this matter. First, the interviewer has to give you a business card. If he/she isn't professional enough to do so, you are the one who has to ask for the business card. And then to send an email thanking for their time, highlighting again your strength and asking for the result. Both your interviewer and yourself displayed quite unprofessional way of dealing with each other.
You said, you dont know much about the HR practices HERE. It looks like you don't know about the HR practices anywhere. It seems you don't know that to follow up on your interview is a good professional way to approach this matter. First, the interviewer has to give you a business card. If he/she isn't professional enough to do so, you are the one who has to ask for the business card. And then to send an email thanking for their time, highlighting again your strength and asking for the result. Both your interviewer and yourself displayed quite unprofessional way of dealing with each other.