1 TON of air conditioning requires 400 cubic feet per minute of air movement in the average HVAC system.
So in order to have a quick Fitbit contact customer support, you just need to punch these numbers, 877-623-4997 on your XOLO (X900) phone. So it means you should not be facing any problem in speaking to Fitbit's customer service representatives.
Scroll down the menu and click on the department that you want to reach out to and you will be given the Flybe customer service digits for customers in the UK and in the overseas and the operating hours of each department. Flybe General Pre-flight Enquiries Customer Service Phone Number 0371 700 2000