Yeah.. I guess it is normal in your case. I think one should complete his application himself. Today, Lawyers/Consultants are not paying their full attention to complete client's application efficiently because they do not have anything on stake. Anyhow, All that matter is you received your PER...
Sir
You have to ask them regarding your matter. because if they completed your evaluation you have get an email from them by now which describes that your evaluation is on your way through courier.
Sir
Do not worry. WES people just emailed later dates if there will be any unforeseen circumstances but they will evaluate your credentials in average maximum 7 working days. so if you choose courier service then you will get it by 15th December.
You will get your assessed credentials report just in 20 days. WES is very fast in this matter. they just emailed you the later date so in case of unforeseen circumstances. It can be delayed.