Use the place that locates the car.
Riverdale Town Center on Church Street includes civic and arts facilities with a plaza and amphitheater. A destination like that is useful context, but the actual parking area and road entrance help identify where a vehicle is standing.
Give the make, model and year and mention any usable spare. A key visible through the window and a last key lost somewhere during the day lead to separate questions. Start with automotive access information or the replacement-key details, as appropriate.
For a home, describe what the door does.
A key that refuses to turn is different from a door that closes but will not latch. Explain what you have already observed without forcing the key or taking the lock apart. A repair request can begin with those plain details.
If the lock works and the concern is an old copy in circulation, discuss a change of key instead. Suitable existing hardware may be a candidate for rekeying; the particular fitting still needs checking.
Keep the next step specific to the request.
An ordinary pedestrian door beside a garage and a moving overhead door are not the same repair. Identify which one is involved. For the latter, see the private residential garage-door information and keep the opening clear.
Call 678-951-0588 with the Riverdale address or parking location. Confirm current availability and the proposed work and charge. The FAQ covers the details to prepare before that conversation.