Amazon — Regarding there service

Hello there
I want to complaint about Amazon customer care executive . Actually I have call many times on toll free no but they told me we have call you after 5 minutes I have call many times but same line also said and I have chat on Amazon app on live chat I have add my number on their live chat but they don't call me I am frustrated about first time their service. I want to complaint about my product query relative question but they don't call me back I want to cancel my extended warranty but in my point of view no cancel option I call many times to contact Amazon customer care executive but they did not call back on my number is -[protected]