Caller: men gave me a business card

Two men promoting Road Seal Bitumen Pty Ltd came to our door stating there was left over bitumen from a major road job being done for Council in the area. They offered to seal our driveway for $30 a square metre. We suspected them to be dodgy and said we would think about it and contact the company and they tried to "hook" us by saying there might not be any left. Any website sounding like that is rejected by my computer and no direct listing online or in yellow pages. Be aware!