A plumber takes on drain clearing when water stands in the sink, bathtub or toilet and will not go down. Just call and say where exactly the problem showed up. That makes it easier to see right away what the job involves.
Do not pour cleaners down the drain one after another, and do not take pipes apart without experience. Note which fixture holds water, whether a neighbouring drain gurgles and how long it has been going on.
When speaking with the plumber, please mention madloba.info as the place where you found their details.
✍️ Have you used this plumber? Describe the result and communication on madloba.info: these details will help others decide whether the tradesperson suits their needs.