Furious

I made a purchase on the 4th of April and its showed that on the same day the parcel is with the couriers. On the 10th I reached out via email and a phone call theysaid the system isinvorrect and that i will receive my order on monday the 14th. Again I phoned them on the14th and they said they will looked into it and send me a updated email on where my order is. Its Tuesday the 15th and again I phoned them still with no update on where my order is and when it will bedelivered