Mobile washing machine leveling and balancing service at home

Looking for a technician for a home visit to regulate the level and balance a washing machine that vibrates heavily during the spin cycle, shifts from its position and makes loud banging noises. As far as I understand, the machine itself is technically fine — it's not broken, just over time the leveling has gone out of adjustment and the balance has been disrupted, and in recent weeks the vibration has noticeably increased. I need a specialist in leveling and balancing on-site rather than general repair, since I don't suspect any internal problems.

The work scope should include checking the floor under the machine, adjusting all four support feet in height with lock nuts to prevent shifting again, checking the installation with a spirit level from all sides. Also please check the transport bolts (in case they weren't removed after delivery), the suspension springs or shock absorbers, counterweights and the door seal area — everything that can affect imbalance, and evaluate the load distribution during a test spin cycle.

It's a front-loader machine standing in a small laundry nook on a tile floor, I suspect the floor has a slight slope, so an assessment of the surface would be helpful, and possibly a recommendation for anti-vibration pads or mat — purchasing a mat separately is a separate matter. After adjustment, please run at least one full spin cycle to make sure the vibration has stopped and the machine no longer shifts from its position.

In your response please indicate: experience specifically in leveling and balancing household appliances (not general repair), what tools you bring with you, how long the visit takes, whether you provide a guarantee if vibration reappears, and your availability this or next week. I can send photos or a short video of vibration during spin in advance so it's easier for you to estimate the scope of work. Priority for technicians from my city for faster arrival.