It ended up going from a one member LLC to a parntership with two foreign partners... I had to pull teeth at every stop of this return to get info out of him... then he eventually introduced me to his partners... Then he tried to tell me they have no ECTI... they do though! so I told him at around 2 weeks in this return will be costing almost double as much as I had quoted him because of the amount of time I'm spending on it. They were fine with it, we kept going on. and on and things kept getting more complicated and I would figure them out. I mean things like they had wires marked as income that were just rejects and they were asking me tax questions about one of the countries I had no idea about.. but my idiot self figured it out for them.. all of it... laid it out. nicely. Sent them a draft of their return because they were pressing me. And during this time I told them I wanted someone who is actually proficient in foreign tax to review the return. They were fine with it. I quoted them the new quote , they were fine with it.... up until today. We had a phone call and after they asked their questions, they all of a sudden said something like we need to look at your quote cuz your oginal quote was different and of course I said it's different it says it right thre in my engagemnet letter. that if it becomes more complicated, if I spend more time which I have, I will charge you more but more importantly you agreed via email at every stage.... but never the less they finished the call by saying they need to talk as a team and about my fees and get back to me... 

it's been 3 hours.. nothing. So I sent my invoice and said it's best if you paid me before I do any additional work for you which is very much needed. 

I think they're not gonna pay... they're just gonna get away with it. because what am I gonna do? take them to court? like I have that time or energy. I'm seriously done. this tax season was the worst. I'm done with these ungrateful people.