Pathetic wheelchair assistance!!!

Pathetically slow at arrival at Lanseria airport regarding taking wheelchair passengers out of the plane! My mum waited over 30 minutes to be taken out! They left her outside in the sun! The plane was already being cleaned for the next flight! She asked a passing worker to assist her! ABSOLUTELY PATHETIC TO MAKE A 77 YEAR OLD WAIT!!!! I reviewed them on the email I received and TWO weeks later, there has been no response and no apology!!!!