Carmatrix - Do not use this service provider

I went to Carmatrix with to test and repair my vehicle's airconditioner. I received a quotation and accepted the quote to replace the condencer and pulley in amount of R16k. I received a limited warrenty of 3 months. Well within a month the airconditioner did not work. I took it back and the informed me that it will cost me another 18k as they have to replace the compressor. I said no thank you.