I was injured about a week before my vacation and needed to use the wheelchair "walker" persons to help from one gate to the next. I was traveling to Canada so I needed them four times: two in the US and twice in Canada. The first time in Seattle, there was a chair waiting but I was brought to the wrong gate. I pointed out during the escort ride that we were passing the gate marked on my ticket but was told by the woman that "these were her instructions". I thought the airlines had changed the gates. After waiting several minutes I walked to the courtesy desk and was told the gates had not changed. So I had to scramble back up the long incline with my walker and carry- on's to the proper gate: C2 to C10C. The Canadian employees were right on the spot, were very courteous and seemed to have a better acclamation to the English language. For the flight home from Canada there was no chair waiting but I felt a lot stronger so I decided to walk. I almost made it all the way to the gate. I spotted an empty chair 3/4th's of the way and walked toward it, an extremely polite gentleman from Air Canada came rushing out and pushed me the rest of the way to the gate. Landing in Seattle there was a chair: not really sure it was for me; couldn't really get the drift of the women''s conversation. She wanted to see my ticket for the gate # I'm assuming. She took me into the terminal where all the other empty wheelchairs were, maybe thirty feet, and told me "here". I guessed this was my gate or hereabouts. There were several other attendants milling around and chatting in what sounded like a Caribbean language. Once again not close to the gate # on my ticket. I tried to get their attention to no avail. I walked to the closest gate and asked if my flight had been changed to a different gate;no. I realized I was once again close to gate C2. This was like de-ja-vus! Nine days later I'm hobbling back up the incline to (C10c)? They were already calling my name to board. I feel if the wheelchair providers were a bit more familiar with the English language and especially were able to read the airline tickets we might not have this example of frustration.