Nope. The seventy years was a period of the Exile in Babylon, Desolation of the Land of Judah and Servitude to Babylon beginning with the Fall of Jerusalem in 607 BCE. and ending with the Return in 537 BCE. Nice and easy!!!
Jer 25:12 states the seventy years would end, then Babylon would be called to account. It says it explicitly, directly. You are just mistaken, as is the WT. Your mistake pits you directly against the holy book you so admire. Seventy years of servitude.