London, Jan 14 It looks like Amy Winehouse, who is holidaying in Caribbean, is failing in her bid to clean up her act, for she has been spotted crawling up to holidaymakers and grabbing their drinks - after fed-up resort staff refused to serve her.

The singer begs guests to order booze for her at the posh Le Sport Spa on the sunshine isle of St Lucia.

Amy, who has fought addictions to drugs and alcohol, is at 200-pound-a-night resort for a health kick.

She starts each day with good intentions as she limbers up with yoga-style stretches before swinging into action on exercise rings.

However, by lunchtime Winehouse is relaxing with a drink on the beach or even openly smoking joints by the pool.

And at night, she hits the bottle with pals - despite the booze ban agreed by her management and staff.

"We keep catching her crawling past bars, or hiding behind chairs. She grabs guests' drinks and runs off, like a squirrel with a nut," the Sun quoted a source, as saying.

The 'Rehab' singer also baffles guests with her mood swings.

One witness said: "One minute she is very pleasant, saying, 'All right darlin' and chatting to people and having photos taken. The next she is throwing things and swearing her head off. During a fight with a friend Amy tore off long acrylic nails she had fitted. She came up with her fingers bleeding and asked for a cotton bud." (ANI)