Does your CPA charge you for a few questions over email?

[Ming Ip]

So recently, I was going to use a CPA for a corporate tax return. He outlined that book keeping was $45/hr and corporate tax would be $500, and any additional costs to file to USA would be determined later. I told him I am all new to this and pre-revenue at this moment and I'd like to ask a few questions and asked if I could count on him to help me through a little bit of book keeping and he encouraged me to ask some questions by ending with "If you have any more questions, don't hesitate to ask". Weeks go by, I ask about 4 questions throughout the span of 2 months. He then suspiciously asks for my corporate legal entity name and address then proceeds to send me a full page about "this is not how it works and I am going to take legal action against you if you don't pay this invoice of $210". He never outlined his consultation service costs, and I have not made any agreement/contract to take on his services. I did not know that these emails were going to be charged and I did not demand for him to answer these questions. I found a new CPA and he is charging me even less at $450 for the corporate return and told me that he won't charge for consultation at all and encourages me to ask questions. The new CPA even told me directly that he will not charge for asking questions and feel free to email him. I am currently disputing with the other CPA over emails about this charge, what do you guys think?