Need help with bad wig

Hi

I'm appearing in a play and as my hair is short- and the role requires long hair- i am forced to wear a wig. The wig I have here is perfect for the role except for one thing- it looks awful!!!

It is about 20 years old and acrylic but hasn't been worn much and spent most of the 20 years in a plastic bag in a suitcase in a storage locker.

The wig itself is reddish brown ,just above shoulder length and layered. It is a bit Farrahesque in the front but looks more like the hairstyle that Julie on The Love Boat wore in around 1979-1981, and the hairdo that Treat Williams had in the filn version of Hair - Long at the back with shorter sides. I haven't a clue what the style is called though.

Is there any way that I can get the wig to look better without getting it professionally styled?

At the moment when i wear it i look like as if i stuck my finger in a plug or something
Your help in this matter is greatly appreciated.