Unwilling Assistance

We are all aware of being on time for your flight and I arrived at the check in stand at exactly 07:45 am this morning due to congestion on the N2. With the flight only departing at 07:10am, these ladies were not willing to assist to get me onto the flight as they've already closed the flight, even though I only hand luggage for the flight. Just their unwillingness to assist is and will now remain a deterrent to ever us Mango ever again. Is this a new way for a branch to make extra money, as this seems to be how they operate. Pathetic service honestly.