Call Centre Technical Issues

In have a package waiting to be delivered by UTi. They where suppose to contact me during business hours, yet called after 6. I missed the call, called back only to be told they will phone me back in the morning. The next morning I received an sms telling met they tried to call me I must call back to arrange for delivery. So I called the centre only to be told a request will be put through to the relevant department to call me back. So for half a day I wait. Only to be called back after 2, yet phone only rings twice then nothing. Again the sms, I call back asking to speak to someone in the department as they are wasting my time. Apparently its a technical error and they can only put in a request as the the department handking deliveries can only make outgoing calls. I in any case again ask to be phoned back. Another hour passes, when I again receive the two ring phone call followed by the sms. This is ridiculous. I dont have all day to hang around and wait for a phone call, only to ring twice and nothing thereafter. What is the use of a call centre if one cannot directly speak to someone to arrange delivery? Please sort this out and get my parcel to me