Failure of a new Philips Sonicare toothbrush in March, 2022, resulted in 2 weeks of failed replacements, calls, & returns. Usable replacement under warranty finally received.Then their emailed discount promotions offering great prices convinced me to try ordering brush heads at their website.!Mistake! 3 days of their system's server error screens stopping check-out, unresponsive online chat, over 10 failed calls to their outsourced (non-fluent) customer service, being either cut off or refused a supervisor or being asked repeatedly for the same ID information resulted in my buying replacement brush heads at much higher price from Amazon. Find another brand with effective customer service for your hard-earned money. I will.