They will if you've reported a degradation of service. I wouldn't be cycling email addresses and credit cards like that - if they find out, they'll just block you altogether.Guess Anystream may fix the audio track issue in the next version.
And APV has a 30-day free trial period. If you have a lot of registered email accounts and credit card bindings, you can use it for a long time at a minimum cost. Even a free trial will generate a credit card charge of a few dollars. (for the US region), and as for the refund policy, I'm not sure if you've used the prime video service you can still get a full refund.