I'm on the "Play More Unlimited 5G UW" plan and when i'm at work (zip code 51111) I'm getting terribly slow data speeds (.09 mbps to .83 mpbs down and .83 mbps to 2.98 mbps up). When I'm at home (zip code 51104) the speeds are great. I'm not hooked up to Wi-Fi at either location. This started happening after switching to the new plan. Is there anything I can do to get the data speed up when I'm at work?