Can a teenager’s refusal to meet his father , eventually lead to the cancellation of child support by the court, even if it is a long-term result of the mother’s alienating behaviour ?

Yes, but only in the most  extreme  and rare situations, where there is no objective reason for denying contact, and as a last resort, following legal action by the father, to cancel child support.  For example, in April 2019 Tel Aviv family court finally cancelled a father’s child support obligation in an extreme case of documented parental alienation, stating that the teenage son himself was nearly 16 and must also bear responsibility for the situation.