ESA ESA3 (IBR) ('underpayment' review 25/9/12 - 23/9/13)

dillon Community member Posts: 12 Connected

The CAB helped me complete my form and I sent it recorded delivery (in prepaid envelope provided) in first week of last month.
I didn't expect a quick reply, but it's been 6 weeks now - does anyone have a rough idea how long to wait before hearing a reply or how long it takes for the DWP to review one of these?
Many thanks in advance for any help given.