Nigel
Sound like you are in a pulpit and have extensive knowledge of the cleaning industry'
There are many carpet and upholstery cleaners, who have learned from experience, that there is more than one way to skin a cat.
Just because you have been taught a particular method of doing something, doesn't mean it's the only, or correct, or best method.
You have a classic conflict of views going on here, with heels being dug in and "no winners"
as many have trained with one outfit and feel confident in their knowledge and new found expertise.
Then, we have the new kid on the block, in the form of a client who believes his man to be " the man "and slaggs of the establishment.
I have to confess, that I don't know whose truth, is the reality,or whether they are just teaching the same thing, but using different words.
There is no need for the attacks on credibility, or is there.
I have a friend, about to attend one of the training sessions, so I will probably attend the other, then we can compare notes and I'll find out what a lousy and crooked operator I've been for the past 16 years and will have to stop using the products which have given me a huge percentage of repeat clients
robbie