There is a difference between looking bad and being bad. Regardless of how many times earlier in the month a drop was attempted, or a trade was attempted, doesn't mean can't call in sick. In fact, one might think an individual might make every effort to avoid calling in sick to avoid any hint of sick leave abuse.

The unasked question thus far is did this use of sick leave exceed the 72 hours of annual sick leave requiring a dip into the disability bank.
A doctors note may be required to dip into that bank. Whether the company would choose to push it that far is another question. (14.A.6.c)

The company could certainly be setting themselves up for punitive measures if they prevented someone from using their credited sick leave hours or recouped salary/refused to pay when the common sense man would think they were obligated to do so.