Fighting eviction for failing to pay the mortgage on his home in Spain's capital, Nelson Castillo is now grappling not only with his own debts but also those of a family he does not know. The 39-year-old and his wife acted as guarantors of another Ecuadoran family's loan under a programme run by an agency that negotiated loans for immigrants. In return, that family acted as the guarantor for Castillo's loan. Now, both families are in arrears. And each of them is legally responsible for its own loan and for the loan it guaranteed. "We were two families and we did not know each other. Ecuadorans are like that. We had to sign the papers and that's it. Goodbye, and each side went its own way," said Castillo. Dozens of anti-eviction activists had gathered outside his Madrid apartment building...