Lil Wayne -- I Didn't Order that Hooker!!!

Lil Wayne had a guest this week who wanted to give him something ... sex. And she wanted something in return ... money.

A hooker showed up at Wayne's Miami Beach mansion, claiming the rapper ordered her specially. But here's the rub ... Wayne was not the buyer at all.

Sources connected with Wayne tell TMZ ... it's just one in a slew of harassing incidents he's endured over the last 2 weeks. As we told you someone swatted Wayne on Wednesday, claiming he shot 4 people inside the mansion. And just 11 days prior cops came after neighbors reported someone lurking at Wayne's house.

Turns out there have been numerous other incidents, and Wayne's people believe the culprit is one guy. He's been incessantly calling Wayne's house and hanging up. The good news ... they have his phone number and gave it to cops.

As for the hooker ... she didn't even get cab fare back.