Billing Error.

I went to Casternoff for treatment, I settled my bill before I left. The issue was the person at the hospital, Gave me someone elses bill. I paid and left. I later recieved calls saying I did not pay them, I explained and sent them proof that I paid. This was meant to be sorted.

Later got calls from lawyers again, I explained the same thing, and now went to the hospital for this. They said it would be sorted.

2 years later, they are still asking me to pay a bill where the error was on their side. I paid someone else bill, cause they gave me that bill, now they want me to pay my own bill in full.

There are protection of personal information breaches here. I thought, they want to settle this amicably.