First they told me that they were charging me $135...

First they told me that they were charging me $135/hr and that I needed to put down a $1200 non-refundable deposit for 8hrs worth of work. Then after 4 hrs of work and calling daily did I get a partial update. I've sent 3 more emails waiting for the report and have received 2 emails back saying that they want more money - another $1200 to do additional work. I've used PI's before and this one seems like a ripoff, poor performance and seem only in it for the money.