from above suggestion more is around 2GB data + unlimited call = 20~30RM

if you can calculate more detail for the usage , mean 2GB a month is more then enough , 200min is more then enough , then can try unifi Wow

unifi prepaid , can use the plan inside : RM18-8GB (no validation) , RM3-30min call (30sec per block)
every month topup RM30 for 30day validation , until inside got a lot credit , then can calculate buy RM50 365validation , keep some credit for buying plan in the next 1year

good for low data usage and low call