How do we get assisted if your phone lines and emails don't get answered?

I have tried numerous times to call Bayport for my prescription letter, to no avail, their phone just cuts off and there is no alternative number. I further e-mailed, yet still no assistance. How does one get assistance if Bayport is unreachable. I am asking for my prescription letter, for an account I used to have with Bayport and was closed. My email address is *** and my phone number is ***. Please assist with that prescription letter.