Guys thankx a lot for your valuable suggestions. They told me that their main office is located in Austin, and they do not handle deposit from Dallas office. So only way I can deal with them now is through emails. I wrote them everything and scanned the receipt. I mean I am leasing house for last 10 years and never had to deal with this type of frauds. More than money, I feel violated. You know like somebody rips you off, and you can do nothing about it. 


The most funny part is last year it didn't rain that much in Dallas. And I live far away from any water source. And they charge me for flooding. Instead I was hoping that they will charge me for the dead plants due to drought. 

Anyway thanx guys for your advice. 

@truenepalidude: I really like your idea. This way I can see where do they get those expensive air filters from.