Being ********** and getting worlds worst service

My kids unfortunately broke the screens on their iphone 6s in 2 consecutive weeks. Discovery have changed their process tohave a phone screen assessed before they approve the repair. They have appointed Smartlab, who on their own website are not accredited to repair apple devices. In both cases the phones were collected and then the painful journey of poor service and supplier (Smartlab) inflicted damages occurred. The first phone, which worked completely other than having a cracked screen, was written off as beyond repair, on receipt back from smartlab it was clear that the phone had been damaged whilst with them A R1400 screen claim was now turned into a R14000 phone replacement claim. The 2nd phone, which is still not repaired or replaced after two weeks went through the same. The notice that we had to wait for 5 days for parts turned this week into another beyond economical repair. Again, a cracked screen replacement has turned into a R14000 phone replacement. When we got the phone back from smartlab what left as a phone that had a damaged screen returned as a phone that will not even switch on...Ive run out of space and patience, this is borderline *****.... Ombudsman look out