AA parameterization we need supports.

Dear all professors,
We have an issue in AA parameterization which we need supports from you.
Please study our case
Our holiday takes from Apr 28 to May 02.
One 1M-saving-contract with open date Mar 29 will roll-over on Apr 29 (within our holiday period)
Normally, interest rate applied for each term is 7%/year.
If customer comes to withdraw in advance (before maturity date, roll-over date), the interest rate applied will be rate for current account which is about 3%/year.
So what we want:
- On the term with roll-over date on holiday, interest will be calculated to last holiday date (one day prior to next working day),
- For next term, maturity date (or roll-over date) will keep on the contract original date.
In our case above:
Currently,
- Interest calculated from Mar 29 to Apr 29 with interest rate 7%/year,
- But Apr 29 is holiday, the Bank closes then customer can’t come. On the next working day, May 03, customer comes to withdraw their money, T24 calculates interest from Apr 30 to May 03 with interest rate 3%/year due to it thinks customer comes in advance.
Changes we need
- First term: Interest will be calculated for period from Mar 29 to May 02 with interest rate 7%/year,
- Second term: Interest will be calculated for period from May 03 to May 29 with interest rate 7%/year.
So what parameter set we need to setup and their values we need to maintain.
Thanks a lot for your help in advance.

Please help.
All of your comments will be highly appreciated.
Thanks!