Our Grandson ( who resides halfway across the country ) listed us as a reference when applying for something. Though we are not sure what. 
We are a elderly/XXXX couple in our XXXX. We have repeatedly informed 'Portfolio Recovery Services ' to stop calling as we no longer have contact w/ our grandson. As we were used ( without prior notification ) as references. 
The debt collectors # XXXX-have literally ignored our verbal request to discontinue calling. At this point, it has become harassment. Please help.