T-Mobile ETF waiver denied even though children are moving out of coverage area

T_MOBILE CUSTOMER LOYALTY IS A SHAM:
I have a family plan with T-mobile and have been a customer for over 10 years. I have 2 sons moving to college in an area where there is no Tmobile Coverage.  I am forced to seek another carrier, and requested a waiver of the ETF - Early Termination Fee - only for them, because they're moving away.  I faxed and mailed all the necessary proof for them, along with a thorough letter of explanation, to request the release from the ETF.  Customer Loyalty flat out DENIED my request, and I CANNOT afford this nor should be liable for the ETF. 
WHAT KIND OF COMPANY ARE YOU???????!!