Sorry AudiTT but this is untrue. Any monies owed are valid for 6 years so they could technically reclaim missed payments even if they extended back 6 years. They do however, need to give you advance notice that they intend to collect the arrears or you would be within your rights to return the direct debit unpaid from your account. However, you would need to pay the arrears as soon as they sent you their intent to claim in writing. However, any decent company will acknowledge their error and negotiate payment in instalments rather than a lump sum. Hope this helps.