Blocked Card

Hi. My card was ****** and I reported it. It was blocked up until I received my replacement card. I went instore - Lenasia branch to have it unblocked. I've now been to another store and its been blocked again. For what reason would it be blocked again. I called in and was told I have to go instore to unblock AGAIN. This is the third time. This is a time consuming exercise and most especially annoying only finding this out at the teller when ready to pay for the items. This is unacceptable. I cannot be spending more than an hour in a store because no one can get the unblocking of my card right. I answered security questions as well as provided my ID. Why does this have to be done instore. Why cant it be done telephonically. I might as well close my account due to the inconveniences experienced each time.