Ahh I might be very wrong, but it seems as though you've created text boxes by dragging the cursor (using the text tool) to whatever size. Usually when you create text, if you do a single click on the artboard using the text tool, you can easily adjust the size, but for some reason, you can't when you drag the cursor.
The simple work around is to outline your text (if you're unsure, goto type/create outlines or simply command key, shift & O for a mac). But that then means altering your text is a git.
Alternatively, if you highlight your text boxes, then go to object/flatten transparency (you'll be prompted with numerous options, I just clicked ok, although you may encounter distortion problems), you should still be able to type, then resize your text as you wish. I hope either method works for ya.