In response to your "only helped": on one of the other Padmapper stories here on HN, someone wrote that after their item sold and they cancelled the Craigslist ad, they continued to get contacted about the item because third parties had scraped the ad and did not stop displaying their copy when the ad disappeared from Craigslist.
This happened to me on the Facebook ad too, but I preferred it it over the lack of any response at all - it proved the services were used. Easy to ignore them or send a generic reply.
