After I got my approval letter on 05/04/2013 at a PEO, I posted three dependants' applications at around 1330 hrs and included the approval letter along with. I sent it through special delivery and told post office staff that the package carries three applications to Home Office and fee is £561 today and will be £1545 tomorrow for each application and that HO will check posting date which should be clear. In case it is not clear and late and returned, I will have to pay £4635 instead of £1683 which means extra £2952. He, very kindly, went in the back office and returned with a package showing date on it. He told my package will have similar thing date etc. I have sent parcels through special delivery but never noticed any date etc but having an extra £2952 in my mind I was more vigilant than ever. I told him to go ahead and later he showed my own package with 5th April date and thankfully gave me receipt etc. Later found it has been delivered on 8th April.
Since then I didn't hear from HO nor my account has been debited. But because I paid by cheque, and due to large number of applications in early April, I am expecting fee deduction in next three days and 100% confident that everything will go smoothly.
I will update regarding fee deduction as we have exactly same postage and delivery dates. Also see this:
http://www.immigrationboards.com/viewto ... c&start=20
On the above link, you will find at least two persons whom applications delivered on 8th April with old fee and accepted.
I think you should not appeal straightaway. Also email will delay the matter. You don't need any evidence through email. Actual evidence is the envelope with postage which has also been returned to you. If they are not helpful on phone, you can email next minute. Scan your envelope with clear date on it if HO wants you to send them this envelope as an evidence.
