Every company provides different levels of customer service. My 16+ year old Ayre Acoustics AX-7e integrated amp stopped working (no sound). I returned the amp to my retailer. He confirmed it was not working (checked the fuses, etc.) and shipped it back to Ayre for repairs.
My repaired amp was returned about a month later. My repair cost was zero (they paid shipping both ways). Ayre repaired the amp, never told us what was wrong and restored it to factory specs. I thanked both my retailer and Ayre.
This is an example of excellent customer service. I was very impressed.