Check with your bank. Many have policies designed to increase revenue and do things like charge you if you use teller more than n times per month.
Why are you only depositing once per month (that is what it sounds like you are doing)?
Are you in the USA?
I'm actually unfamiliar with the deposit slip. My bank's ATM simply takes checks one by one and I use my credit card to log into my account to have them deposited into my account. Can you explain what deposit slips are?
I shall check with my bank, thanks for suggestion. When I opened my account they simply told me to do it at an ATM.
Deposit slips are itemized lists for what you want to deposit, like XXX in cash plus YYYYY in checks. You list each check out with the check number and the amount. Then you simply write the total and hand the entire bundle to the teller. They'll reconcile it later.