I ordered a phone last week Friday ,I got an sms saying my order would be delivered on Monday, I stayed home for the whole day waiting it did not come

I ordered a phone last week Friday ,I got an sms saying my order would be delivered on Monday, I stayed home for the whole day waiting it did not come . I alerted the people at courier it and iStore They said the driver was delayed and I would receive my order on Tuesday The same thing happened and it happened again on Wednesday Today it’s almost the end of business Thursday i still haven’t received my order