Tired of Slackness review: Slack Pos Malaysia

I have complained to Post Malaysia  and received a very poor and useless response. I sent an letter to the US on 7 December 2012 by Registered Post, in order to deal with a contract officially and that need to reach there in 1 month time . In fact the item was not delivered until 31 March 2013 – over 3 months! 
When I made a complaint the reply from Post Malaysia contained no apology and no sensible explanation – they stated that without any reason the item was returned to Malaysia 4 times, (after I have to keep on asking and asking, and even then no specific answer were given, or just not answer at all)at one point spending about 6 weeks abroad before being returned (and then sent back to the US again). 
I simply don’t find this credible, and since I paid and turned my item over to Post Malaysia, I expect them to take responsibility and at the very least to apologise for the delay. I asked them to investigate further and they replied that I have to fill in a form etc. rather than just do it. (really, this one they could said it at the very first email)
When I asked them again to further investigate using the tracking number they gave me I received no reply, and so I have got nowhere closer to an apology or explanation at all.  
At one point, my email was bounce back with Delivery Status Notification status after communication with 7 emails.
SERIOUSLY? Like Pos Malaysia trying to blocked my email and not deal with my issue?
Nevertheless, I sent email again (after not replying more than 3 working days) and it go through this time. 
They refuse to give me the USPS tracking number and asking me to fill up form etc and without any apology for not replying, earlier, not replying in 3 working day and no explanation for Delivery Status Notification earlier. 
As a customer, its important to let this out to the public so people are  aware  of this.We are not desperate to use their poor service and we always have other choice. 
 Suggestion for SERYIA SINAS E-MAIL TEAM ESCALATION & RESOLUTION CUSTOMER CARE,   if you learn or get the company to send you for training for basic ethic and manner  and have integrity with your work ( you have tons of them incase you dint know just google  yourself up. Customer need more than 'carbon copy and parrot talk answer' or not answering the the enquiries/question at all.

Really it is not difficult to just apologize in the very first email for the inconvenience cause, and have it check straight a way rather and not wait until your customer have to keep  pushing on and on just to know the reason why. 
Customer paid for  your salary and we paid for the service.  

And like other Malaysian, we are so tired of this  typical slackness of 'take apa' and inefficient attitude.

From my experience do not trust Post Malaysia to send your items abroad, they are not competent to deliver them in a timely way, and do not care to investigate, explain or apologise for their shoddy service. Oh ! not to forget, arrogant as well.
With all the tons of complaint you can read online, it would be great if Pos Malaysia can go bankrupt or something by the end of 2013.