lil wayne &  drake*As far as $400,000 that a company is suing Lil Wayne and Drake over because of a non-appearance, the two are saying aw hell to the naw!

And why are they taking such a hard line? Because they say they were never informed of the gig, reports TMZ.

The rappers have joined together to fight a default judgment entered against them.  The judge ordered the duo to pay $432,337.50 to Imperial Entertainment Group.  The company sued, alleging L.W. and Drake promised to perform at a 2011 event but were no shows.

The rappers now claim in legal docs … they were never told about the appearance, never signed ANY contracts and were never even served with papers to show up in court.

Drake and Lil Wayne allege that IEG used a third party to book them — Melanzh Enterprises — which they claim had no authority to book them.

The two want the court to cancel the $400k plus judgment.