Hi. I have participated in some ICOs. Some of them were really bad, including lies or half truths, harrasing users that made questions on telegram, changing the terms on the fly... But I would like to know what people think is the right way to conduct ana ICO.
Welcome to cryptoworld brother and experiencing these kind of things which is normal knowing that not all ICO are legit ones and some do handle it on unprofessional way which you can really make your own indications if its a good project or not. By just seeing their attitude or on how they do handle thing you can able to know on what kind of project they do have. They act shady then better to leave and don't invest.
Imvest in ico is very high risk involve so we need to do is research.
If you find the project like you said above, leave them is very good choice rather than you put your investment in high risk.