First thing
yes you do have to turn up - or else you will get a default judgement against you and this is BAD very BAD
I think they want the whole amount dont they - all up front coz you didnt pay, rather than that month's cont.
[ and you havent paid the whole lot, and so you can't counter claim ]
but you can certainly turn up and ask the magistrates NOT to grant the whole sum in jjudgement but to restore the monthly payment thingey.
would be worthwhile - as my CT is £800 and I wouldnt fancy paying the whole lot in one go - I have done in the past, can you guess why ?
and yes with poll tax, I WAS able to show the court that the council probably owed me £5 on the day, and certainly I did NOT owe, £30, £60 and £90 as the various summons alleged and there was a lot of fluttering which I dont need to cover here . [ whilst I was telling the clerk what I was gonna tell the judge I found he had already made an order against me without hearing me even tho everyone agreed that I had made it quite clear I wished to be heard on a relevant point , and the case had not been called. ]
If you can show as you have said, that you paid albeit late £40 or whatever on April 1 and they alleged in the court summons that you owed money on April 10 the date of the summons when you did not,
then Yes turn up to court with all the papers and ask the judge to dismiss the claim.