Over two years ago XXXX XXXX began sending a " past due '' bill for aroound {$50.00} to our address. ( We have had XXXX for over 5 years ). It was addressed to our son XXXX woho has lived in XXXX for over 17 years and has never lived at our aderess. 
We contacted XXXX and they said it was a mistake and they would correct and delete the charge.Over two years later we are still being harassed by bill collectors. ( The latest is XXXX ', XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX IL XXXX, ( XXXX ) XXXX. The bill is now $ XXXXXXXXIn the process we have complained, our son has complained, and XXXX has admitted they are wrong but we are still being harassed. 
Can you help us?