AT&T, like most large corporations today, is run for the benefit of senior executives. It is a direct consequence of the bogus ideology of shareholder value. It's all wrapped up in language that makes it sound like the only ethical way to run a business but in practice it is used by executives to loot the corporation via stock buybacks, debt fueled growth by acquisition, and myriad accounting and finance tricks to goose apparent executive performance.
You, and me and especially the customer are just a means to an end. We all exist (in executive eyes) to help them enrich themselves. Don't be fooled. If you relocate you will most likely be far from family, friends, and other support systems when they lay you off anyway. Under no circumstances should you incur any debt to move. Trusting a company like AT&T is a recipe for poverty if you get into debt to move. Say yes to stall them and look for another job. You owe them nothing.
Well said, @ZJIriAL-1kgb.