I'd email them.
PCN ********
I refer to the above, your Notice to Owner dated 3 March and my emailed formal representations dated and sent on 31 March.
By virtue of the authority having failed to comply with regulation 6(7) of the Appeals Regulations(to serve notice of their decision within the 56-day period - at the date of writing 59 days have elapsed) then regulation 6(7)(b) applies, as follows:
(7) If the enforcement authority fails to comply with the requirements specified in paragraph (4) within the 56-day period—
(a)it is deemed for the purposes of these Regulations to have accepted the representations made by the recipient, and
(b)it must—
(i)cancel the relevant enforcement notice,
(ii)refund any sum paid in relation to it, and
(iii)serve a notice on the recipient informing the recipient that the enforcement notice has been cancelled because the enforcement authority failed to serve a decision notice in accordance with paragraph (4)(b).
Yours,.....