The broker failed to comply with the 15 work day time stipulation to issue the renewal notice to the insured.
Hardly speculation, fact.
IMO, it is pure speculation on your behalf... not a fact.
Do you know for a fact when the brooker precisely dropped the renewal in the letter box?
Do you know for a fact that the postal network did no fail at delivering on time?
The only way to guarantee delivery would be to send by registered post... but them customers would complain that they have to go to the post office to collect their letter..