What's in a name

I'm not called by my given name which is just as well as I hate it. I never called my PiLs anything. I just couldn't manage it but obviously they became Grandpa and Grandma after the children arrived which was a relief. DH called my parents Mother and Father which they and I found hilarious. My sons in law call me by my Christian name (not the horrible one!) and the girls do the same to their PiLs. I object strongly when some whippersnapper on the phone trying to sell me something I don't want, says, 'I may call you '****y' can't I'. . I always say no you may not!