Yea, thats why im asking how to solve this

Based on case example and personal experiences, it would seems such incidence is unavoidable. My opinion is that we could probably minimise such incidence.

When such incidence (lawsuits, fines, summons, penalty) happened, it will require a person to agree or disagree such incidence. In such cases, evidence is crucial and in most instances documentation is very important. Verbal is not good enough. One will need to keep proper documentation. Let me give actual examples:

1) The police sent a notice demanding a fine to be paid for a case 5 years ago. I remembered very well that I actually paid the fine and got the receipt and handed the receipt over to the person that was fined who asked me favor to paid on behalf first. However, the person misplaced the receipt and has no choice but to pay again since there is no documentary to prove otherwise. Imagine ... has to keep the receipt for 5 years or maybe more!!

2) Same unfortunate person rented a house and on completion of tenancy, called the landlord and said will return the house and keys on certain date. On appointed date, landlord did not turn up. So the person went to landlord's office and fortunately return the keys with a dated letter but not acknowledged by landlord or representative. 6 months later, the person was sued for house damages and 6 months unpaid rental because the landlord claim the house was not return per contract.

You will note in these 2 cases, documentation is important to proof a case. Sometime situation happened because of the other party wilful intent or negligence.

Hope this helps 

will this person be single?

Male or female?