Celcom Axiata review: super slow & unstable network

Dear Celcom,
Can you please resolve the unstable and super slow network at Senai, Johor. Because at Senai, most of the time the network is unstable! So, what is the point of paying so much for the monthly bills and unable to use the network? The current 4G network of Celcom still not efficient and effective, but Celcom planning to expand the 5G network?
I hope you can solve the problem as soon as possible.

Thank you!