From David Quick
Former users of Paymentshield who have had their commission payments terminated are right to be angry. This is an underhand way to treat brokers who have loyally placed business with the company over the years on the basis that the renewal commission would be paid even if they stopped selling general insurance products.
It seems as if everyone can shout as much as they want but the new owners of Paymentshield do not look like they are going to back down. Sue them by all means, but the best way to make your displeasure felt is to persuade as many brokers as possible to stop placing new business with the company and switch existing business to another provider while you still have the chance.