for the previous tenant. She moved out nearly 18 months ago. I know they are debt collecting letters as I opened one by mistake months ago and they all have the same return address/envelopes. I must get two or three a month at least (since I started noticing them after opening that one last year). I have been forwarding them to her new address but they don't stop. So for the last few months I have been returning them to sender (address on back) and writing on the envelope 'not at this address, please amend your records'.
Clearly this is not happening. But I can't contact the company directly without opening a letter again which I don't want to do. I'm worried about it affecting my credit rating long-term or even wondering if baliffs will turn up looking for her. Any suggestions?