i cant complet my payment information still said card number not much card type or decline payment method

If currently using an iOS device have you tried using your computer's iTunes instead ?

And if trying to use a debit card have you tried using a different card, preferably a credit card, instead ? Not all debit cards seem to still be accepted by iTunes, and they might no longer be accepted at all in some countries.

For a card to have a chance of being accepted it needs to be registered to the same name and address (including format and spacing etc) that you have on your iTunes account, and have been issued by a bank in the country where you are (and therefore the country which is on your iTunes account).