Wix complaint: Problem with WIX Partner AUTOPODS

I will appreciate any suggestions that you may be able to provide in regard to my problems.

I have been working with a WIX Partner who has my site in a mess and I honestly do not know where to turn. I have been billed over $700 for his charges and everything that he has touched is incomplete. He first set up my domain e mail and now it will neither send or receive email. He added a Hymns section and agreed to upload 46 hymns and only uploaded 14. He set up a video site and agreed to upload 2 video files and copied the same video twice and I sent him both videos. He says that my Contact Us for testimonials is complete but he has not provided me with the instructions of how to use it and paste in the testimonies as we agreed on..
Here is another problem after our first contact he fixed my email but it took him a long time. I did give him a good customer review as I felt he did reasonably well and I wanted to help him out.

I have a hearing impairment and prefer email communications so when I asked him about adding other things to my site we did not work through WIX which I would assumes takes WIX out of the picture. I do not solicit for donations nor do I expect any. I operate on my own money and I am not a tax exempt organization. All communications with me are better if conducted via email. I have overspent my budget and my wife is very upset with me. I really need to get these issues resolved and my website running smoothly. It would really be great if there is anyway that you can get him to fix these issues.

Ken