www.tronicsolutions.com review: I can't reach them, ‘coz they have changed the phone number

I paid deposit for the website developing to the company www.tronicsolutions.com. The sum was rather high, but these jerks didn’t provide any confirmation or any guarantee. I tried to reach these jerks, but it turned out that they have changed the phone number and no one provided new one to me. I sent emails, but no one replied. No idea what to do now. Please, post comments.