well i just purchase this few months back
now i already ported out because i mantain my old number
a l;ot of problem

wtf, like that also can! 

ok, enuf of that bs. So which is the cheapest telco to maintain validity now? Im going to port out of XOX.

hotlink pantas validity is RM30 for 1 year?

Hotlink Pantas plan might be a good option in your case.

Get a Hotlink SIM (RM10, comes with RM5 credit) and change the plan to Pantas Plan (RM2 one off cost)
You can then purchase either 1GB for RM2, 2GB for RM4 or 5GB for RM10. All three options are valid for 1 year/365 days from the date of purchase (need to be in active period in order to use it.)

Reload RM10 (and above) will give you 30 days active period from the day of top up/reload. You can also purchase 1 year active period for RM30 shall you need it.