While some plumbing issues can be handled by you and a plunger, serious overflows should be left up to a professional. For one, the water overflowing t is likely contaminated, something a professional is ready for. Secondly, plumbers will help ensure any underlying issues are taken care of as well.
Attempting to handle cleanup or repairs on your own could do more harm than good. So if you don’t know how to fix the problem or don’t feel comfortable, give your local plumber a call.