Free Traffic Legal Advice

Been trying to fight these charges. I have a leased space and forgot to renew my permit. Been using temp ones. Went away on holiday and came back to 6 pcns delivered over the next couple of weeks 😩 been in touch with the originator ukpc who obviously don’t care and want nearly £1200 in total. They’ve sent 2 sets of pcns to 3 different debt collectors (which seems odd!) these are the only 2 I have received with letter before claim? Any help/advice how to respond to these please ?

I can’t upload a pic as it says somethings full 😩