I am being sued by Arrow Financial Services for a credit card they bought from Washington Mutual Bank. I don't know what to do, should I contact them or their attorney. They say I owe 2700.00 but I think that is way to high. I really don't want to go to court. If someone could please help.

Well if your original debt was lests say 1400, and they had late charges and over draft fees each month for 5 or 6 months till they charged the debt off. Then there is legal fees added, and if they have filed court papers, court costs added ( if not there will be additional court costs)
So a 1400 debt can easily become 2700 or more.

You can attempt to work out a payment plan, but if you don't work out a plan, they can sue.