Sorry to hear that, IH8Boost. Let's check this thing out. Just to confirm, is the handset working slowly or the service? How long have you been experiencing this issue?
To research further, can you please provide us with the nearest cross streets and zip code where this occurs so we can check the network performance? Are you getting any error message when trying to use the service? Are you only experiencing issues with the data service or with calls and text messages as well?