Terrible Call Centre!

I wanted to query why my parcel is on it's way to a destination that's nowhere near me, however, calling the call centre number 4 times, with an average wait time for pick-up of 5 to 15 minutes ****erally!), whenever my call was picked up the call was cut off. How can we call and actually speak to someone? I intend to report this to the supplier that I purchased from and request that, in future, they use an alternative courier company for my orders.