Late delivery again

I have had a few items shipped to me from Canada over the past 6 months. TNT has been used every time but I now want to change courier. Delivery has been late EVERY SINGLE TIME! I have had to phone every single time to put pressure on TNT to get them to stick to the delivery date. I have had enough. I was told by Olean that my package would be delivered on Thursday 14 May (he had forgotten to mark the customs as paid! I had paid customs on 12 May! So already two days delayed because it had not been marked).<br> Nothing arrived Thursday 14th. I phoned Friday 15th May. I was promised delivery that day. Nothing. Today, Monday 18 May I phoned this morning and was told to contact Gilal (sp?) which I did. He promised me the delivery would come today! Gilal called me later this afternoon to tell me it couldn't be delivered today and I told him not an option. I had rearranged meetings for these samples now 3 times due to no delivery and could not reschedule the meeting tonight! He called back and promised it would be delivered by 7pm this evening. NOTHING! I have compromised my business relationships due to changing meetings and now canceling last minute due to no delivery! Don't use TNT!