Cant Replace Battery Without Fixing Speaker!

I wanted to replace my phones battery as it was saying under the battery health section on ios that it needed service and was running at 78% of its peak performance. Costing only $75 AUD I took it to an authorized service center and they ran a mandatory diagnostic on the phone showing that my “speaker receiver” needed replacement/fixing as well.. They also said that they cannot replace the battery without fixing the speaker issue first. Ive had no problems with any of the speakers on t the phone nor has my voice clarity been affected over calls. However since the speaker is somehow connected with the screen according to them, I will need to do a screen replacement as well. (which costs $200+)

Is it possible to just get the battery replaced without fixing the other “issue”?