IMDb declines my deletion requests for multiple items submitted by malicious tags.

I feel a complete overhaul of IMDb.com needs to be done. For years Ive had issues. Not user friendly at all. I've had multiple malicious entries on my IMDb profile by outside people adding "credits" I was never a part of. I've tried to submit a deletion for these outside additions to my account, however IMDb declines these deletions sometimes asking for "proof" that I was not a part of them? How can I provide proof for media I was never involved with? Extremely frustrated and these are hurting me for outside jobs.  Disappointed.