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.
I have tried contacting the customer service for fitbit for 3 days now. the website always is down. there is no email for customer service and the phone number is not working. FRUSTRATING! It works about as well as the clasp on the fitbit.