Only texts No calls!

Hi - so I met this guy and we seemed to click. He has been initiating contact but it's only just texts, not a single call. He does want to meet in person and keeps asking me out. Why would he not want to call though for a quick chat once in a while at least? I have suggested my preference for calls over texts many times but he doesn't seem to care. What is going on here.. any thoughts? (and yes I tried asking him but never got a straight answer and neither did he ever call)