MJ Tribute Concert Promoters Accused of Dodging $200,000 Bill ... For Plane Tickets

10/14/2011 9:55 AM PDT

The bills are starting to roll in for the Michael Jackson Tribute Concert in Wales last weekend -- and TMZ has learned, the organizers have already been accused of ducking a $200,000 tab ... for VIP plane tickets.

A rep for the Entertainment Travel Company tells TMZ, Global Live -- the company behind the event -- hired Entertainment Travel to book plane tickets for the Jackson family, Christina Aguilera, her crew, Jamie Foxx, Heavy D, roughly 15 Global Live employees and others.

GL allegedly racked up a $200,000 bill in the process -- which they were SUPPOSED to pay two weeks ago. But Entertainment Travel Co. insists they haven't gotten a cent ... and now GL isn't even returning their phone calls.

Several members of the Jackson family are scheduled to fly back to the U.S. this Sunday -- but Entertainment Travel is getting ready to play hardball ... telling TMZ, they're gonna cancel the Jacksons' tickets if GL doesn't pay up. The next step is a big, fat lawsuit.

TMZ spoke with Global Live CEO Chris Hunt ... who tells us, "All bills are being reconciled and as they have been told, they will be completely paid in full."