Wait for the directions order. It will set a court hearing date and deadlines for submission of Witness Statements but also, critically, a deadline for the claimant to pay the court fee which normally precedes these.
You then put a note in your diary to check with the court on the day following the payment deadline whether or not the fee has been paid, if you have not by then been notified of the discontinuance of the case.
DCB Legal normally discontinue before the deadline. It’s their standard tactic to frighten people into paying until they have to spend money on the case.