Rule 4A of Service Tax Rule

Dear All

As per service tax rules service provider is required to issue invoice or bill with in 14 days of the rendering of service or receipt of payment whichever is earlier. However one of my vendor is issuing service tax bill after 2 years of rendering of service. Its 100% clear that vendor is not compling with the service tax rule 4A. In this case if i paid for the bill, whether i am eligible to take CENVAT of the service tax paid on the bill? Please quote some reference with your answer.