Well no, I'm not trying to sell toilet paper or black bags. I noticed this sign pasted on the back of a road sign and wondered to myself whether tourists, visitors to Cape Town, are ever confused by signs like this.

In case it's not obvious, the owner of that phone number sells refuse bags and toilet paper - at a reduced price, and often of inferior quality (though not always so). Everybody's trying to earn extra money, so people find ways to undercut regular retailers and sell directly to the public.