Dealership Cancellation of Service Contract

I bought a Service Contract from the dealership and cancelled it. I took a picture of the document stating that I am cancelling it, I also recorded a conversation with the Finance Manager stating verbally that I would like to cancel my service contract and giving information on the date I arrived.

It has been 36 Days and I called the Dealership only to be told that the Dealership never submitted the paperwork. I am paying Interest Daily on $4,000 at a 8% Interest and I was told that I need to wait another 2-3 weeks to receive the money.

Is there any repercussions on the dealership since they were negligent in cancelling my service contract?

Also, can I ask for a copy of the Vehicle Invoice stating that I purchased Dealership-Add Ons since it has my signature?