travel nursing

Hi everyone!
This is my first visit to allnurses. What a great site.
I am an ER nurse for 11 years and have just taken my first travel assignment in Southern Cali. I am sure there are many ways to benefits from this but I don't have the travel experience to know what they are.
So far, I have put out alot of personal money and been inconvenienced in the first week.
I spent lots of money packing and storing everything in my home. I expected this expense, still it is alot. I also had a hitch put on my vehicle and rented a small u-haul (both very expensive) and drove over 2200 mi to get here. After getting unpacked and settled, in very nice accommadations, I was told that I had to move due to my 70pd dog. Somewhere between travel agcy and apartments I moved to, the info got unrelated and no dogs larger than 35pds are allowed here. They gave me one week to move! How generous, offering to pay a larger pet deposit did not help.
Anyway, agcy got me another apartment, not as nice and now I have to pack up and move again this week. God only knows where my mail will end up with 2 address changes in a week. (Hope I get that IRS refund). disconnecting cable/internet, and reconnecting, you get the message. Agcy is giving me $300 to move again.
One of my questions is, if my apartment is significantly cheaper than the first one, who gets that money? And shouldn't the agency have found me someone to come in and move me so I wouldn't be inconvienced as much?

Any tips could help. Agency is asking me to consider extending my contract (already) and I a little anxious because other than living in beautiful Cali, I have seen more financial burden and inconvenience than anything. Sorry so long!!!