Mcdonald's India — about very loud songs sung by a band called rising band

Address:

Mehsana, Gujarat, 384002

The manager of the McDonald's store has allowed a band called Rising band to do their show (singing) inside the store using mic and loudspeaker having such a high volume that the customers are having trouble in placing their order. People cant do conversation due to high volume. Nobody is willing to sit on the seats near a huge speaker.
This band is doing it for charity and i have a huge respect for them but the volume level should be low and monitored.
The manager should sincerely look into it he wants to sustain the growth of his store's income.
Please allow them to do their thing but at a low volume.