IMHO - the call was good. He waited for you - then got in your ear, was obnoxious, was making an azz of himself - and succeeded. If you let it go it just encourages him to continue and encourages his players and asst. coaches to do the same. In this case I am not inclined to "give a warning". He was asking for it - you gave it to him - good for you. As you stated - no further problems.
As far as the "I was counting to myself" comment - tell him to count quietly next time!!
