Answer:
The customer's browser has been hijacked by some attackers may be.
Explanation:
According to customer's explanation there is possibility that that his data may be stolen and he has to disconnect computer from network and then call given number in order to get back his data.
Answer:
it could be your internet
Explanation:
mine used to do it to me because of internet and since everyone is one the internet because of the Coronavirus everyone is working online that could be the case
:)
I beleive you need to insert a watermark