Mr Delivery drivers *****ing from Customers

I placed 12 orders on Saturday and 3 orders were not delivered and my brother placed 9 orders and 2 were not delivered but on our Apps they were showing that all orders were delivered, I called Customer Services and explained what just happened and was asked a lot questions and by the end of the call I felt like I just wasted my airtime for nothing, the following morning I sent an email to *** and I got a call and was promised to be reimbursed with × 2 R200 coupons which I have not received to-date,On Monday I placed 6 orders from Checkers using Mr Delivery and 2 were not delivered and I got a call from 1 of their driver's *** who was very rude and unprofessional asking if I've got some form of identification and I said yes I have my drivers license and he told me that they don't accept a drivers license and he hung up on me,I called him back to find out why other drivers accept a drivers license as a form of identification and I asked for his name so that I can call H/O ,he rep**** I Don't care you can call H/O,Now to me this is the drivers and few of his friends who've been *****ing from us,I called Customer services asking for the Drivers management team and the consultant said they're not allowed to give out their contacts and he's not able to put me through to them, after a few minutes I got a call from a consultant named Zaid and he promised to send me × 2 R200 coupons which he did,the frustrating part is that the drivers can get away with *****ing from customers and the Head office will do nothing about the matter.