It hardly takes 5 days to get the Investment account number for GIC from Scotia Bank. Call the bank.
Following is important while applying for GIC:
1. Sign on all pages of the application form, copy of your LOA, copy of first and last page of passport(include visa pages if you have or had any visa).
2. Add all scanned pages to one pdf.
3. Keep the size of pdf below 3MB or it may not be delivered.
I sent my application on Oct 5 and received GIC account no. on Oct 11th.