AAM, correct me if I'm wrong: this debt (even if it did exist) dies after six years, right? http://www.irishstatutebook.ie/eli/1957/act/6/section/69/enacted/en/html My interpretation is that you are a name on a list that Cabot have bought from this telecom. Some of the names/debts on that list might be legally enforceable, most aren't. Cabot's business is extracting maximum value from that list with minimum cost. Given the low value of these "debts", they are not worth much manual effort to chase individually. Nobody in the company will have spend so much as a minute on your case. They will have an automated system spam the names on the list, to see who "volunteers" to engage with them. Those who take the bait will be harassed further, to see if they will "volunteer" to commit to handing over money. At some point, the system will decide that you're not worth the cost of stamps and paper to harass you.