I did not purchase the Telus leather case. However, I did manage to get a credit for a replacement battery door from Telus.
I called Telus (611) and told the CSR that my battery door was bulging out on the sides and it started clicking whenever I typed. I told her I did not want to send it in for repairs/swap. She offered to credit the full purchase price of a battery replacement door ($19.99 + tax). The credit was instantly uploaded to my account.
http://www.telusmobility.com/en/ON/h...atteries.shtml
I called in for my friend and had no problems getting the credit for him as well.
Note: If the CSR does not mention anything about the replacement door, just straight up ask for the credit. Also, they may put a note in your account and ask you to go buy the replacement door than call back in. As they can't ask for proof of purchase, just call back in a few hours later, and they will credit your account.
Hope this helps.