did they remove the rm1 validity thing? i can no longer find it. so annoying

Hey everyone, my latest bill just came out, and it turns out U Mobile has charged me for both my old and new plans. I’ve already filed a complaint through the app and contacted customer service. The rep confirmed it’s likely an error and promised to report it. But it’s been a few days now, and I haven’t received any updates. Any advice on what I should do next?