Having difficulties in making and receiving calls

[munikwasr]

I'm using an A53 5G and lately, I can't make or receive calls. If o try to call someone it just ends the call abruptly and if someone tries to call me it just says "Number Busy". What should I do because I tried updating the software and resetting network settings but to no avail.

[JoeyMphela]

Is this happening after the update to one ui7?

[munikwasr]

yes

[osdenza]

Could be call barring

[munikwasr]

I checked and it's not that