Class action firm Chimicles & Tikellis, based in Haverford, Pa., received a victory out of a federal court in Michigan last week in the beginning stages of its class action suit against cellular services provider T-Mobile USA.

The firm’s client, Chun Wing Wong, is the only known plaintiff of a yet-to-be certified class that is suing T-Mobile for overcharging customers due to a billing system error that has yet to be resolved.