Knowing the telecom workers are on strike, making any form of customer service unavailable, i went on alfa website to activate my postpaid line, login in my account and clicked on activate my line as per the following picture:
Which bring me to the following page requiring a pin code:
Here where it get interesting since i should receive my pin code by SMS, but the genius behind this algorithm forgot that inactive lines DON'T RECEIVE SMSs.
So now I cannot use my line knowing I was paying monthly fees to be able to use it when I need to.