Galaxy S6 Edge repair joke

The latest S6 Edge 'superglass' screen cracked and I logged a call on the 20th April 2015 with Samsung ADH Premium repairs to collect the phone on the 22nd April 2015. I was told that it would take 1 day for the screen to be repaired. My helper gave them a Galaxy Pocket by accident and the courier agreed to leave the loan phone (which has a faulty microphone and my voice echos during calls) from Samsung and to return for the S6 Edge the following day, however the S6 Edge was only collected on the 24th April and the call centre agreed to return the Galaxy pocket on 30th April. Fast forward to the 5th May, no calls from Samsung, the Galaxy pocket hasn't been returned as agreed, and I phone the call centre to speak to some chick who tells me that my S6 only reached a technician on the 29th April, she doesn't know when it will be repaired, but I must just UNDERSTAND that it's going to take min 5 working days without travel time so hopefully I can expect my phone in 2 weeks time. I am LIVID. They've already had my phone for 2 weeks, I'm using their FAULTY phone, the phone they picked up in error hasn't been returned and absolutely NO ETA on when I'm going to get my phone back.