Bad delivery services

I have been waiting for my order since Friday the 19th amd i got an sms only on Saturday at 09:00am the 20th of June that my delivery was rescheduled for that day(Saturday). I cancelled my plans for Saturday and even missed school on Friday for nothing, i still didn't get my order yesterday. I sent you an email on Friday enquiring about the delay but you didn't even bother getting back to me! It's Sunday today amd no sms or call from the company to tell me what's the delay of my order. Can i get the exact date of my order because wow! My order on my tracker is standing still and not moving. I am very disappointed and disgusted by the delivery services of this company, and it's my first order for crying out loud!!!