https://www.reuters.com/article/robinhood-support/brokerage-robinhood-introduces-24-7-phone-support-after-communications-criticisms-idUSKBN2GV1DM >Robinhood Markets Inc said on Tuesday it had introduced 24-hour customer phone support, seven days a week, addressing criticisms over the app-driven retail brokerage's communications that were also implicated in the suicide of a client.