Water storage tank oh Water storage tank

This Syabas really inefficient. My house already 3 days no water. Notice given say only 2 days.

We are suffering. I am thinking of installing additional water storage tank.

You may buy from this link with free transport.

http://www.ewarehouse.atkc.com.my/index.php?route=product/search&search=water%20tank

But not sure how much is the plumber services??

I am thinking of 850L to 1000L.

http://www.ewarehouse.atkc.com.my/plumbing/water-tanks&filter=13

RM 942.50 - promotion price




http://www.ewarehouse.atkc.com.my/plumbing/water-tanks/dwt-dle20f-vertical-flat-bottom-without-stand-304-stainless-steel-water-tank-850l-190g?filter=13&sort=p.price&order=ASC&limit=50
DWT - RM 788.80
Anyone have any good recommendation?