POOR Internet connection and POOR Customer service

[AlbertLam]

Hello Digi. I would like to report my internet connection issues.
My data is unlimited. But the signal bar is low when it shown 4G and also the line will change to H+ frequently.
The coverage of my place is pretty good before but don't know why it suddenly become poor.
I had reported this issues for 3 days continuous through My Digi app. But even they told I will be contact in 2 business days, I didn't get any reply.
I really hope my problems will be fix immediately and the customer service will improve.
Thank you.