Pathetic Service!!!!

About 9am on 27 February 2015, my friends and I went to the Mugg & Bean take-away section at OR Tambo Airport as we were in a hurry to board our flight. We al ordered sandwiches which they said will take approximately 10 minutes to prepare. I ordered a cheese and mushroom sandwich and had to pay extra for the mushroom. However, when we received the sandwiches, there was only a cheese one and all the service attendants disappeared at the time. I assumed it was the wrong order and decided to wait for my order, however I was getting delayed for my flight. Someone came out from the back (assumed kitchen) said that it was my order and they had forgotten to put in the mushrooms. I said if it was ready, they could put it in. They said they were bringing it out, after waiting 10 minutes, they still did not bring the mushroom. By this time my friends had left me, as it was time for boarding. I even asked if they could just refund the money but no one wanted to assist. I eventually had to forget about my order and run off towards my boarding gate. I'm disappointed to say that the staff made no effort to assist me although I had already paid for my order. Pathetic Service indeed!!!