I browsed thru some of the previous postings and noticed theres a confusion on Apple 'service centers'. A search thru Apple website yielded information as per below (cut and pasted from Apple website, hope i wont get sued for this). According to reliable sources , these ASPs have a KPI on a turnaround time of 7 days on any Mac related repair (East Malaysian AASP gets a longer period due to logistic issues).

Please bear in mind parts support are subjected to 5 years and after that they are relegated to be known as 'Vintage Model' whereby you may have to check with your local ASP for parts availability.
Who are they?

- Apple Authorized Service Providers (AASPs) are part of a network of Apple-authorized businesses that provide comprehensive support and repair services for Mac products.

AASPs employ Apple-certified technicians, who complete regular Apple training and assessments, so you can be confident you're getting help from qualified, experienced professionals.
List of AASP in Malaysia :
Central Region :

Machines@Northpoint by Machines Service Sdn Bhd (2.3 kms)
Northpoint Offices Mid Valley Block B, Level 16, Medan Syed Putra Utara
+603 2091 9600
     
QCD@BerjayaTS by QCD Technology (M) Sdn Bhd (2.6 kms)
Berjaya Times Square, No. 1, Jalan Imbi, #08-55 Level 8, 55100 Kuala Lumpur
+603 2141 4840
     
VR@MeganII by VR Technology Sdn Bhd (3.8 kms)
Megan Avenue II, Block B-0-7, Ground Floor No 12, Jalan Yap Kwan Seng
+603 2163 2020
     
MacCity@1Utama by Mac City Sdn Bhd (8.1 kms)
1Utama Shopping Centre(New Wing) Bandar Utama, Lot S309-S310, 2nd Floor, Petaling Jaya, 47800 Selangor
+603 7726 2880
Northern Region :

Switch@Penang by CG Computers Sdn Bhd (21.3 kms)
A-10-2, Bay Avenue, Lorong Bayan Indah 4 Bayan Lepas, 11900 Penang
+604 644 3580
Southern Region :
Reserved -
Sabah :

Technocrats@KotaKinabalu by Digital Fortress Sdn Bhd (3.2 kms)
Damai Point Commercial Centre, Lot 1, 2nd Flr, Blk A, Off Jalan Damai, 88300 Kota Kinabalu, Sabah
+608 844 8699

Sarawak :

Switch@Kuching by CG Computers Sdn Bhd (1.5 kms)
The Spring Mall, Unit 112, 1st Floor, Jalan Simpang Tiga, Kuching, 93350 Sarawak
+608 242 5591