its not right for them to be calling you cold just becasue your not very open. everyone is different, some people are more open than others, but even so it doesnt give them the right to call you that. i wouldnt listen to them because they dont know what your going through.

how do you mean that you very bad with people even family and friends?

my advice is not to listen to people who call you cold.
(((((loads of hugs))))