I pay monthly direct debit.
So much easier.
i enquired about this, they said they have no such system.
Well, in that case I wonder where my money is going. Quite obviously what is happening is you have been asking a dunder-head. They do have that system in place, it is there, you just need to call em a bit more, eventually you'll get the right dept.
Its a Direct Debit, not standing order. I pay what my annual tax-bill is on an annual basis divided into 12 equal monthly amounts.
As for overpayments, I dont pay them that much monthly to allow that to happen
Under payment, well, I then owe them what is outstanding.