Hi Maria,
my surgery was cancelled a few times for various reasons which was very frustrating. I had a bilateral TRAM which is similar to a DIEP. One thing with these long complex surgeries is that it brings a big team together for a whole day. Minor things can cause cancellations which of course doesn't help your frustration. However they then have to coordinate the whole team together again. Maybe you could ask your surgeon why he is so keen for you to have implants? Some surgeons do prefer certain procedures. My breast surgeon was keen for me to have implants as he could do the procedure. When I mentioned the TRAM or DIEP he too advised me re scars, costs length of procedure, however when I stuck to my guns he happily referred me to a plastic surgeon who was skilled at the microsurgery. They both actually worked together when I had the op.
I was private so don't have much experience with the public waiting list if you are public.
Sending you a hug, stick to your guns and I hope you don't have to,wait much longer. One thing yiu can do while you wait is try and get as fit as possible as this will really help with your recovery.
Paula xx