Owning your own home

Back to one of the reasons that I wish to move, the ongoing legal situation with the service charge;

The service charge for H1 2020 is £1387.29, so dividing that equally over Q1 and Q2 gives a charge per quarter of £693.66.

We're being pursued for arrears of £711.88, of which if I had not suspended the standing order ~£687 would have been paid on the 25th of March (this was the H2 2019 figure, which we'd not updated inline with the increase in the service charge to reflect the actual H1 2020 figure).

I suspended the standing order because the solicitor stated in their letter that if I had allowed the payment to be made (to the account of the managing agent) I'd be liable for a £95 charge.

Now, we are in Q2, and the standing order for the 25th of June has been revised to pay £693.66 (inline with the H1 2020 service charge, which would have left (genuine) arrears of £18.22 on the 26th of June.

I have therefore paid the £18.22 today, and the standing order will pay the remainder of the H1 2020 service charge on schedule on the 25th of June.

My plan is to call Brady's solicitors tomorrow and inform them that:

a) I've paid the £18.22, so the outstanding balance is precisely half the H1 2020 service charge
b) And that will be paid on schedule by standing order on the 25th of June
c) Therefore I consider the matter to be closed, as despite repeated requests they have not shown that I am in arrears, and everything is scheduled to be paid on time, as per my agreement with Martin back in late 2010/early 2011
d) I would like a letter from them confirming that this entire discussion is at an end

Does this sound reasonable?