Do I get a "no cost" exchange for a Arcadyan router

Cali Cat wrote:

If your provided router is not functioning correctly, Tmobile will send you a new unit at no cost. You don't own the equipment, but the "rental" fee is part of your monthly plan fees. Contact home internet tech support to start the process. One thing that you cannot do is request a specific model. Tmobile will send you whatever they have in stock but usually the same model for a defective unit replacement.

I have gone to the T-Mobile store here in town. They wanted to charge me $70 to exchange it for a working one. That is unacceptable. I will take that $70 bill to my grave!