Review Postbox cannot lock since 30 July 2018 and nothing is being done to fix the lock

Postnet at The Grove does not return phone calls after they've taken your contact details and keep their customers in the "dark".

I've reported the lock that is stuck on the 30th of July 2018 to Chris at the Postnet (The Grove). He promised to have it fix and call me within 24 hours. I haven't received the call as promised and returned to Postnet the following day. Chris told me that he is still waiting for the technician and took my key. Again he promised to give me a call (I am still waiting for that to happen).

Today is 21 August 2018 and still no feedback!!!1

I've tried to phone Chris numerous times but it seems that their phone number according to the internet is not working (maybe incorrect?)