I was working on a data set that has different attributes related to Banking

Here the dependent variable(RESP) is categorical, however most of the other factors are of numeric type. Hence I wanted to apply linear regression for it instead of logistic regression, since most of the independent variables are of numeric type. Can we use linear regression for a classification problem? If yes, how do we convert the answers into 0 or 1? And isn’t it theoretically absurd?