Unprofessional and Bad Practice from Weelee's Chelsea

I have never dealt with such Unprofesional business as Weelee and their business partner, Good car. I received an offer from Chelsea on my car and she told me a dealer (Good car) would contact me or I must contact them. After signing the offer (contract) all attempts to either at least get a feedback from Chelsea have failed. Even the dealer (Good car) Chelsea told me about has ignored my messages and calls as I wanted to know when are they collecting the car as right now I can't even sell the car to anyone else since I signed the offer (contract) with Weelee. I am very Disappointed at Weelee as I had trusted them. I am feeling like I am dealing with a ****