Local Compliance letter dwp

Hi received a local service compliance letter. District panic. Rang immediately the guy was so understanding that I was not coping. He told me someone anonymously had telephoned to say I shouldn't be getting benifits. From what he told me it could only be one person cos no one else knows what he told me. He said he was satisfied with what I had told him and wouldn't be taking it any further. The person who reported me is supposeadly my only friend and I think she may have done it out of jealousy iI now go out with her x boyfriend. She hates him. She is still nicy nicy with me. It's deplorable. Will she be notified no further action.
My question is can I trust him does he mean it. What happens to the anonamos complaint. Will it be kept on my record n possibly jepodise future claims like my appeal and new claim.
I have a new claim in forces a and pip. I am literally at the end with all this. It's making me I'll. Thanks

Thank you thank you. I feel very hurt that my only friend I made at the gym and to my face is so kind giving me a hug when she sees me did this. I am gutted and just don't no how to deal with it. I'm scared of her.