This guy thinking he knows everything

I just met a guy on rlgarage. He said (he has like 1 month on rlg) that you can't trade more than 10 credits a time. Then he tells ME, with 2 years on rlgarage, that my knowledge of the game might be lacking and goes on with telling me his bid of 100 credits less than the other offer, is so much better because apparently you can't own 650 credits at a time and telling me the other guy mist be a scammer. Seems a little desperate.