<human>: I interviewed about two weeks ago and got a phone call last week that they wanted to offer me the position and the hr rep I was dealing with told me to take the weekend and contact her this past Monday. They had to get an exact number from a director within the company and told me they would get back to me. I spoke with hr twice Monday, first time I told them I just wanted to know how much because I would be commuting and the second time I called back to tell them I know they have to come back with an exact number but I had my mind set on working for the company for the summer. I asked how the process works as I have never had an internship before and was told they would have to send me an official offer letter when they get an exact number from the director which should have only been a day or two. This was Monday and now were going into Thursday.

Can you summarize the given text in a few sentences?
<bot>: How long do I wait for an offer letter before calling up hr or emailing the person I have been dealing with that offered me the internship? I dont want to keep bothering the hr rep.