@doncoyote, does the tablet have a "." key? Use it. Your post is exhausting to read.
If your only voice provider only allows for WEBCHATS, that is on you, buddy! I would suggest taking it back to where ever you purchased it, and give it back, or stop paying for a service that you aren't using, or can't use for that matter, because of crappy customer service! How did you find 48? Was it a webchat? How did you talk with them prior to getting the "number"? See how this is not really adding up? I understand your eyesight may be poor, but how did you get the device in the first place?