Telephone customer service has become so automated that it can be extremely frustrating to resolve a problem. When it comes to bill collectors, the stakes are high. If the matter isn’t resolved, it can ruin your credit. In this video, Ana, a Cuban immigrant to Miami in the 1970s, hit a wall of silence after responding to a collection agency that claimed she owed $34,000 for a debt. (The video didn’t describe the nature of the debt.) If she didn’t pay, the agency threatened, it would put a lien on her property. But when Ana provided the debt collector with the documents to prove she’d already paid the debt, she got no response. The problem was finally resolved after s…