AUTO PROTECTION PLUS will not return my money. Santa Ana California

On JAN. 11, 2018 I called David Gray to cancel my contract because I still had another year on my warranty with the dealership that I bought the car from.  When I signed up with Mr. Gray's company I told him I still had another year with my current warranty  and not to put his  contract into effect until Apr of 2018.  He has had my $2,152.00 for over a year and earning interest on it all this time.

 When I called Gray and told him about having my money for over a year and reminding him about not putting his warranty into effect until Apr. of 2018,  and the fact that I did not use his warranty because I still had one, he told me that asking to wait for the coverage to be put into effect a year later would like telling McDonald's to sell spaghetti.  After some arguing he said the money minus $300.00 for prorating and $75.00 for cancelling would be sent to me.  I called in Feb.  Gray said he would have to consult with another dept.  I called 3 times in Feb. and was told  gray would call me back, which of course he did not do.  

I called on March 5 and was told the money would be put back on my credit card and to check every morning to see that it was returned.  Like a fool I checked every day and nothing was returned.  I called again and was told it was wired and to check with my credit card company.  No good.  I called again on March 12 and was told that the check was mailed to my home.  Every day I looked for the mail and was dissappointed each time.  I called numerous times and was told he would call back.  Didn't happen.  I finally talked to Gray and he acted like he didn't know me and he would have to check another dept.

 I called on March 26 and I asked Gray why the hell he was doing this to me and he said "Oh.  Cursing already?  I will call back when you are in a better mood."  I asked to speak with his superior and he said "Who?  The Janitor?"  I lost it and said "You f**king b*****d!"  Sorry for the language, but I am sooo frustrated.  Any help would be appreciated.  Thank you.