Depends. You can expect more calls assuming all your ad spend is going to the right places. First, I would check to see what aspects of your advertising (devices, audiences, placements, keywords etc. ) Are converting and increase spend/ bids on those places. Then I would look at ones that aren't converting and decrease spend on those ones. Otherwise if you just increase spend, the money could go to places that don't bring in results and you'll waste the budget.