By mistak i have blocked messages from a caller on my samsung GT-C3222 and now all messages frrom that sender are being stored in spambox and i couldn't even know when the message has been sent, kindly let me know if there is any solution to unblock that number.

Usually the same way you block them is the way you also unblock them but sometimes you have to use a computer depending on the make and model of the phone.

My samsung GT C3222 mobile is not accepting files through bluetooth but could send. plz help me solve this?

sorry the ebuddy is not compatible with the Samsung GT-C3222.!

well, you have an awesome mobile...
go to contact>select a contact>option>block by name or block by number(choose your opinion) and its done! To block message in to message inbox>select a message>choose option>block by address or block by subject(again choose your opinion) and yes they are done.
they can be again retrived by setting>call settings> block list. And for message >message >message setting >general setting >spambox >blocked message >and then just do according to your phone.
have fun!

regards!

Just follow these steps 
Menu>Settings>Applications>Message>General Settings>Block messages
Delete the contact in that list.

hi friend, just do one think. go to in phone setting and there is factory setting or reset option.select it and it will ask you for code that is your security code number. Enter it and your problem is fix.
before, this process. your should save your data and contact in your backup point.
or you should check your message center number. it is correct or not. it is configure by your connection customer service center. i suggest first you do this process. it not fix. then, processed for reset setting



Regards: Rakesh

Goto menu- mesages- settings - general setings - block messages.. u will find the blocked number.. just delete that

Go to messages->Settings->General settings->Block messages then delete the numbers you wish to unblock.
Hope this help...

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Go to Messages --> settings --> General Settings --> Block Messages
then remove the number from By Address .
Now you will receive the SMS from that friend