[mothered]

he told me I can't read the chat history again later on and it would be deleted. I also wouldn't receive an email about neither the chat nor the refund.

Given he didn't bother to explain himself, It doesn't make any sense.

Records are kept of every conversation/communication - chat, phone and email so there's no reason to decline sending email confirmation on the refund and the chat log. It's probably his first day on the job, or he forgot to take his morning meds.

You've received your refund, so disregard his Incapacity to do his job.