Vendexa - Fake Product and Misleading Advert as well

I purchased this product after seeing their advertisement on Facebook. It clearly showed that scratches on the car get removed upon applying the product. As for the headlamp, the yellowness was supposed to go. The purchase was made around Jan **th and delivered to me on Jan **. I was taken aback at the size of the bottles as I didn't recollect them being so small. I still gave them the benefit of doubt and went ahead to try the same. Nothing works! Neither do the scratches go, nor does the headlamp get polished. It was a clear fraud. My hard earned money has gone to waste. I am unable to contact them.
Kindly help me in getting a refund for this.