Warning on physio callers.
ABMU Health Board, which covers Bridgend and Port Talbot, say companies have been asking for appointments at homes to showcase products such as chairs, beds, zimmer frames and wheelchairs.
Some have complained that they have felt pressured into buying items, costing them several hundreds of pounds.
Nichole Powel, deputy head of physiotherapy, said: "These calls are not being made by any department within the health board, nor have we have asked companies to contact them.
"Our physiotherapy teams only contact someone if they have referred themselves to our Physio Direct service, or if their GP or hospital specialist has recommended physiotherapy."