I hate giving out numbers, when stuttering I often repeat myself - so I have to try really hard NOT to do this with numbers. But still, when I struggle it's just a reflex now. A lot of people get the number wrong, and I always ask them to repeat it to me to confirm (I suspect a lot of people don't because they know it's wrong but don't want to keep torturing me). I once was speaking on the phone to a woman who just could not understand me at all. But she kept pulling random numbers out as well, even in fluent sections. In the end she just kinda went "okay thanks bye \*hang up\* I was not at all surprised when after three weeks I still had not gotten my call back >.>