Mcdonald's India — cold drink served is useless as no cover or straw - no fizz by the time you start eating

I went to eat at mcdonalds today. While the order was being prepared and drinks were placed in serving trays, i requested sachin from mcdonalds (Across the counter) to put a lid over the cold drinks as it will be plain sweet water by the time, we would receive complete order start to eat. He said nothing will happen, i asked him 3~4 times. Another colleague of him, i requested her i asked her to put some lid/ cover over cold drink glasses. She said 'sorry sir we have have stopped straws and covers over cold drinks'. I could see there were lids/ covers next to cold drink machine. By the we took the order to table and started eating, the cold drink was just sweet water. And, we paid to drink this sweet water!! Is this what mcdonalds is doing to save material costs? Then it comes at a terrible cost to you, you may lose customers having cold drink at your restaurants. Won't it be a revenue loss for you? Are soft drink companies partnering with you aware of it? In fact, i do not want to go to mcdonalds again..