Mr Delivery doesn't care about customers

I would give no stars if possibly. Order two separate deliveries. One arrived, pizza all smashed into one corner. But the second delivery never made it to me and I even got a notification saying my food was delivered which it obviously was not. I have emailed, called even contacted the restaurant that same evening, the restaurant told me to deal with Mr delivery directly which I then emailed (over 9 emails since then) I then contacted them 4 times which they would just end my call. The this afternoon I get an email stating I complained 3 days too late for a missing order. I the. Continued to screenshot all emails (with date and time showing) of when I contacted them and also screenshots of the phone calls I made to them ranging from 30min after the order was meant to arrive untill now. The arrogantly tried to tell me they won't do anything as it's too late for me to complain, I then explained that how I the hell am I too late when I was contacting them via emails and calls to sort this out. And have emailed all my screenshot proof. Which I Now realize that customer care does not care and will not resolve this issue as they Now refuse to deal with me. If I was made of money or not. This is a mother angry over the fact that my 6 year old daughter was waiting for it as it's what she wanted for having a good week.