No Parcel after 15 days. BAD CALL CENTRE!!

The parcel was dispatched via speed services on the 26th of March 2015, from the Margate branch. It was addressed to our place of business using door to door. it was scheduled to arrive the next day. To date, it has still not been received. We have been trying to contact them through their call center, after 20 minutes of being placed on hold, we eventually gave up and dropped the call. The sender followed up with the Margate branch and was told they had tried to deliver 4 times. Our trading hours are between 10h00 and 18h00 and this is clearly written on the shop window.