I had an issue with an ambulance bill that was billed separately from everything else. Despite me being conscious, handing them my current id - they found an address from 2+ year prior - so I never received a bill until the collections notice.
I spent the better part of 5 years resolving it; I got them a check from my previous health insurer at year 1 when I got the notice, but since they had already sent it to collections - and I had denied the debt they never removed it from my file; then they changed billing 3rd party providers. So i spent 4 years calling once a year -- until I called an administrator for 2 weeks straight until she got fed up and fixed it.
I spent the better part of 5 years resolving it; I got them a check from my previous health insurer at year 1 when I got the notice, but since they had already sent it to collections - and I had denied the debt they never removed it from my file; then they changed billing 3rd party providers. So i spent 4 years calling once a year -- until I called an administrator for 2 weeks straight until she got fed up and fixed it.