Like all rogue traders and cowboy builders, etc. None of them ever stop. There were others on the programme recently, plumbers, builders and locksmiths who were ripping people off to the tune of tens of thousands in some cases .............they all seem to keep trading no matter what.
What happened in the USA following J P's long campaign against Bait and Switch ? Has it gone away, or is it still their, but disguised as Bronze / Silver / Gold standards of cleaning, or..............is it still in use but presented as " upselling ".
When, does what's regarded as a legitimate trading practice become a " con " or a " rip off " ?