They are threatening to leave , my fear is that they will cause more damages and simply leave , they aren't U.S. citizens and I sense that they can simply ditch on the U.S. law and run off to another state or even perhaps back to their home country and not be accountable for anything since none of us , including the law , will be able to track them.

As a US citizen you are subject to Federal Income Tax on earnings no matter where they are earned.Interestingly enough, all of the benefits you mention above are available in this country if you use the services of a good estate and tax planning attorney.

We are basically forced to continue paying for water that we are NOT utilizing if we take into account:-Water bills from nearby properties with similar characteristics are way lower-The amount of persons living in the property is two-The fact that our bills are issued prior to the actual consumption, and do not take into account factors such as weather (no need for watering the yard), time away from the property (vacation), etc.On a separate note, when we attempted to register our property on the waitlist to get a meter installation (program that is now stopped due to potential lead repercussions), the system declined our property claiming that it was not eligible, although we follow all parameters indicated – a non-metered, residential account for a single family home.We believe this is a completely unfair, abusive, and unreasonable situation, which might affect other many citizens who are stuck within the same conundrum.Any suggestions?

Are you a foreign national or US citizen currently purchasing a property in the USA?

The major legal hurdle sounds like it's covered in that a Philippines citizen or corporation must own at least 60%.

Be a good citizen and report your evidence, if / when you have any.Be a good landlord / property manager and enforce the terms of the lease. 

The other side of the coin is that the fall of the Turkish lira is the reflection of deep economic and political or not, which could have an influence of the value of your investment.I invest in countries where it's profitable but I also want to make sure that 1) I'm treated equally as the citizens of the country, 2) the risk of my property being confiscated or nationalized is limited and 3) I can repatriate home my rental income and the proceeds of the sale should I decide to sell.I would consider investing there if I'm satisfied that I can get all of that but I believe there are better places to invest right now.

The issue now is that most of the banks don't open accounts for russian citizens because of the war (wich I am totally against of ) and I wonder if I can ask the title company on the closing of the deal to send me money via the Western Union or MoneyGram to Spain.

Keep in mind my dad isn't a citizen so NO he cant be a cosigner.

You want to be on both sides(buying into the assets and capable seller/transfer of equity) as the economy moves.Philosophically speaking and .....what makes excited about residential real estate in USA is not about residential itself but our ability as individual US citizen so we could get cheap or free money from goverment ( 3% mortgage rate is lower than 3% inflation rate) for 30 years  with the same fixed payment for thirty years, with leverage 1:4 to leverage 1:20 (using FHA) for an asset thats "almost always" appreciating double than inflation ( appreciating > 6% is equal to double).