Problem with appstore purces

[Lisirein]

Sraeli store
Visa debit from post ofice
Plus
I changed my password and it wont ecsept it
Again
Why????? what i typed wrong?
Can i make in app purces from ipad or must use pc?
Same with itunes?
And why cant i buy store gift card without shiping in the usa only?
There was a link about email gift card but the link was broken and wrote weird stuff!!!
Help
Phone them?
Apple forums?
Tired of technical problems