If a person has a good CIBIL score, say 790 to 800 and has obtained several credit cards with high limits including top tier cards and has maintained a good payment and utilisation record and then for some reason, his score dips to 700 or lower, would the banks in question close the cards or reduce limits even if the payments are on time and the utilisation is low? Has anyone experienced this? It hasn't happened to me but I am curious about what would happen in such a scenario.