Paid and did not deliver the product

I bought solar equipment from a company called Solare Energie Systeme Quedlinburg CC, the owner is Andreas Ritter. I paid the 70% deposit on the 13th of September, was supposed to be max 15 days to receive and install I then paid the last amount 30%, 4th of October when all was ready, this was a mistake as the agreement was after installation. Today is 20 of November and nothing. All I got is excuses and its the supplier and so forth. Now I see he is not answering the phone always a bad sign. This whole issue cost me R 113 000 and I got nothing to show for it. I have copies of all payments and the invoice. Be warned.