Spurs defedner Anthony Gardner was adjudged by Styles to have fouled Birmingham midfielder Robbie Savage in the penalty area and David Dunn scored from the resulting spot-kick to give the hosts a 1-0 victory.
"I don't think this referee should have been in charge of the game today," the Spurs boss said after the game on August 16th.
"He had a big problem with Birmingham and you could tell that he was affected by that. From the first minute I knew it would go against us.
"The last place he should be officiating on the first day of the season is St Andrews and that is why we lost today."