What are the reporting requirements for a Non-O visa holder in Thailand, and do I need a certificate of residence to open a bank account?

Hi All-I have a couple of questions that I am hoping I can get some help on. I entered Thailand this week on a Non-O 90 day visa with the intention to extend by marriage. First question, I was told that I need to report to local immigration office upon arrival at my new residence (Ubon Ratchathani). I went to the local immigration office and they had no idea that I need to do this. I called the main immigration office in Bangkok and was told only need to report 60 days into my 90 days. Any idea what is correct or if I need to report at all?

Second question, I need to set up a bank account for the THB400,000 but the bank told me I need a certificate of residence from immigration to do so. I called immigration office and told me I can only get that from my American embassy. Is this true and does anyone have any experience with this? Anxious to get the bank account set up as needs to be in 60 days before I apply for marriage extension.

Any help would be much appreciated!