There are some things that ban be tough when your whole job is on low quality phone lines. At times, Bs and Vs, Ds and Ts, Cs and Gs and such letters sound exactly the same. It can lead to exchanges like this one. The caller in this case was of Spanish heritage.
Me : Can I have your email address?
Caller : It’s email@example.com
Me: Ok, so that’s “b” like boy “o” “c”?
Caller: It’s B like bocadillo.
Me: Ok, but is that first letter B banana or D like dinosaur?
Caller : It’s B. Like bocadillo.
Me: Right, but is it B like banana or D like dinosaur?
Caller : Yeah, it’s B (b sounds just like d over a bad phone connection. So I have no idea what he said)!
Me: Ok. But, like, what letter is it? Is it B or D?
Caller: It’s B like boy.
Me: Right! Thank you!