Non delivery

I ordered tablet to be delivered to me at work sometime on the 23rd May. Gave the my details and location. Promised delivery on the 29 may but parcel was not delivered. I called and I was told they can't find my address and I asked why I was not called and never get an answer. Inquired again today and I was told my parcel was not delivered because they needed access card/permit to deliver which is not true. I asked why they didn't call and again I was told they called but I didnt answer. Asked which number they gave the number I do not know. I asked to cancel and I was told I can't. I don't know what to do now. Unfortunately all people I called cannot help me