You can get in touch with AirFilters.com through the customer service on the airfilters.com page. Generally, a message or Contact button will be provided on the airfilters.com page. You can use this button to send a message directly to the customer service of AirFilters.com. The customer service of AirFilters.com will deal with the problem for you in time. AirFilters.com also introduced an automatic reply function.