Idp Ielts — listening affected because of sound echo and non available head phones

Address:

T1y6y8

Hello,
Ielts is an english assessment exam for foreign trained people. It’s an expensive exam, also listening section is dependent on speakers too, while writing and speaking sections are subjective too. Last saturday on june 23rd, i noticed that speakers had echo and sound wasn’t proper and one of the applicants pointed out that problem too but he was told that sound would be better later on but it wasn’t.
This is going to affect listening results. I appeared at global village calgary test center.
Thanks
Huma jafri