mobile repair delay of 2 months instead of 5-7 days

I'm looking for some advice re 'SBE Ltd', a company well documented on the web for its horrifying service.

1) My Xperia Z1 developed a line of dead pixels on the display (fair enough, it can happen to any display) - so I sent in the handset for repair.

2) Display was fixed, only for SBE to have caused an audio malfunction, rendering the loudspeaker unusable on calls (sounded like I was underwater/interference).

3) Sent Z1 back, SBE reported 'no fault found' and sent my device back.

4) Contacted Sony again, to be told to send it in again - so I did so - this time, SBE 'found' the audio fault (which they caused) and replaced my Z1.

5) Having waited as long as I did, I was stoked to get my Z1 back...after opening the box, I saw the Z1 they sent out was damaged and chipped all around.

6) Contacted Sony, reported issue, and despite having been 'escalated' (this was done before to 'ensure' my Z1 was sorted), I've not heard back - each time I contact them, I get the same response, 'wait until we call you'.

7) What made it worse, is that the 'escalations' chap who called me initially made out that its a 'like for like exchange', and implied that my Z1 must have been in similar condition - which it most definitely wasn't - how very rude.

So, I'm now sat with a Z1 (which I haven't even used, it still has the protective film on it) which is damaged, and this whole saga has gone on for over three months. It's damaging to Sony and its Xperia brand, and genuinely has me thinking how SBE Ltd are still in business - they're a total joke - I'm sure a zoo would've done a better job.