Crossing into Bolivia

I had way more issues than I would have ever wanted in my crossing into Bolivia.  I entered Peru on the American Passport, which is fine, the issue was that I wanted to enter Bolivia on the Israeli one to save myself $135 in visa fees associated with the American Passport. At first they wouldn't allow for me to change which passport I was traveling on.  So I argued with the guys for about an hour in Bolivia.  They sent me to the Peruvian office, and it was more of the same. I went back to Bolivia and they told me to hold on while they talk to Peru  (realize the two offices are about 500 meters from each other, so it was a pain to walk back and forth with all my stuff).  Peru finally told me to come back there, and then stamped me in and out with the Israeli passport simultaneously.  The told me they would do this in exchange for a bribe of $30, but I only had $28 on me (I had much more, but the rest were in big bills and I wasn't asking for change for my bribe), so they took it and I left Peru.  When I got back to Bolivia, they demanded a bribe as well, but I said that since I had all the proper paperwork from Peru there was no reason to pay them anything, because at this point I was legally correct in the eyes of the Bolivian government.  Well, they didn't like this, and thus gave me only a 15 day visa instead of the typical 90.  I suppose it's ok.  I don't want more than 15 days in their shitty country anyways, but it was one hell of a morning.