Shocking call center service

I am to say the least shocked and appalled at the bad service received from the Builders Warehouse customer care call center.

I realized I had made a made a mistake..I had put the wrong delivery address for one of my online orders so I phoned customer care to find out if it was possible to change my delivery address as I would not be available to receive my order at the given address. I expressed to them that I needed to know if it could be changed ASAP as it was supposed to be delivered tomorrow (Saturday, 07 December) and didn't want it to go to the wrong address.

I called in total of 5 times (which was a total waste of my time and airtime) and as of now I still do not have an answer as to which address my order is going and it is supposed to be delivered tomorrow. Every time I phone I get put through to the despatch department, get told they are busy, I will put you through to the manager, nope he or she is busy can we call you back and I STILL haven't been phoned back.

FIVE times I mean how hard is it just to find out if the delivery address can be changed and then phone me back and say it's done and it's being delivered to the correct address?

My order number is: *** by the way if you care enough to read this