Unless the lender has proved the debt they cannot instruct debt agents to collect payment.(posted 7577 days ago)The debt must be proved by the lender (with evidence to back up their case)
If they cannot prove the case then they will have to take it through the courts
Just write to the lender and inform them that you require further proff of the alleged debt and until this time they cannot send debt agencies to chase a debt that they have not proved. Seek legal advice and inform the lender of your rights.