Vodacom La Lucia doesn’t answer its phones

Last week I renewed my contract at Vodacom La Lucia Mall Durban. I had no problems and all went smoothly. However since then I have discovered my green ID book missing. Thinking I may have left it at the store my mistake I tried phoning to see if anyone had found it. I dialled 3 separate times. Each time the call was answered by some mechanical device telling me to hold while my call was transferred to an operator. Each time it went on to ring about 10 times then the call was cut. So it is impossible to call them telephonically. This is unacceptable and constitutes poor customer service.