When you send a message to someone frequently but do not receive a response, it is really frustrating. I recall needing someone to take my online class recently. So I started looking into it and eventually found someone. So, we talked about my class and charges, and he agreed to everything. However, when the time arrived for my online lesson, I sent him a reminder message, but he didn't respond. So I dialed his number, but he did not answer. Seriously, I was seriously injured.