I have been experiencing issues with my 5G router since the 25 /05/23 I have called into the support center on 6 different occasions and each time i am told my query has been sent to the relevant department

I have been experiencing issues with my 5G router since the 25 /05/23 I have called into the support center on 6 different occasions and each time i am told my query has been sent to the relevant department . This issue is still not resolved and this process has become increasingly difficult And i am not happy with the service i have recieved My sim card only works in my mobile device and this has disrupted my ability to work from home