>"I'm not getting much credit or, "time to pay" if I have to clear the whole month's amount even if one transaction was made just a few days before it is deemed, payable"
But if you don't have to pay until 17th October, chrissa, you will have benefitted from anywhere between 17 and 47 days' interest free credit.
Just a warning , if you don't pay in full the interest will be added, backdated to the date of purchase, not to the bill date, and I have a feeling Vanquis charge above average rates