Tight bandage, swollen paw

I didn't notice her swollen left paw until she was sitting at the foot of my bed, on a white sheet. It would have been visible yesterday, but I didn't pay attention. Her left paw was double the size of normal.
- no one told me what to do with the bandage.
- on Saturday no vet answered the phone.
- luckily two friends that have cats advised me to cut the bandage off as soon as possible.
I did so. Fortunately the paw was warm, and she wasn't careful with it. I massaged it lightly, and on Sunday (Feb 22nd) it was of almost normal size.
I think the vet clinic made a mistake, and I am going to call them in the morning - though to no avail, I'm afraid.