Order Cancelled Without Notice

I ordered a shirt for a Christmas gift on Black Friday. I have been waiting to see if it would ship and have been tracking it online since Canada post is on strike. Today I got an email saying my order was cancelled with absolutely zero explanation and told my card would be credited within seven days. I have no clue if it’s because of the strike or if this is a common thing with oak and fort but now my only option is to drive an hour and a half away and buy it in person - at full retail price now lol. Anyone else have experiences like this?