Robloxs customer service phone number is (888) 858-2569. This is the best phone number to contact Robloxs customer care unit, which is open 24 hours a day, 7 days a week, and has employees from the Philippines. In addition to calling, customers can also contact Robloxs customer service through email at [email protected]. Roblox does not offer live chat-based customer service. Customers can also contact Roblox through their websites contact page.