So if you owe WebAfrica R70 and you don't pay, they should just sit back and do nothing? Where would you draw the line?
Money is money, and if it's for eg. 1000 people that owe R70 and haven't paid, it's R70 000 they would just have to lose.
You don't buy something, don't pay and then when get threatened with legal action get all upset about it, YOU DIDN'T PAY. YOU owe them money. (This is of course not aimed at the people that got sent the notices wrongly.)
Also, as far as I understand, they send out suspension notices beforehand. It seems these final messages warning about legal action just included a few people that weren't supposed to get it. They've mentioned several times that they're aware of the problem and are actively working to correct it.