impossible to cancel

Am trying to cancel a flight -which apparently can only be done on the phone. Have been calling for 3 days now. No answer the first two days. This morning I got through but receptionist just put me back to the menu, and have been holding since. I hold for about 10 minutes, then get cut off, and phone back. I can't believe in 2021 they haven't set up an option to cancel flights online. And if this is the case, why don't they have enough staff to manage the calls? Thank heavens they keep telling me how important my call is to them!