Has my laptop or network been hacked?

I have to take a long time: I ordered a cell phone on Ebay about 1.5 months ago. Everything was fine but then I discovered by accident that the handleer is rather dubious. I then wrote to the dealer asking him to cancel the purchase. He said that this was not a problem and shortly afterwards I received an email from allegedly "Ebay" that the purchase was canceled. I hadn't thought of anything because my full name stood there and everything else seemed completely serious. I clicked on details of the termination and then logged in. When I wanted to check my emails a few days later, my antivirus program sent a message that this was a phishing site. That struck me as extremely strange. But otherwise I have noticed no abnormalities. The money was also transferred back. I then sent the email to the phishing check email from Ebay who said the email did not come from eBay. Since then I have received a lot of advertising on websites like Chip or Kicker.de Ultra, even with Adblock. In addition, when calling from a cell phone, the connection is sometimes very strange and on the landline, call center people have been calling more and more recently. In addition, it often happens that a landline call simply breaks off and the display shows line interrupted.

I'm extremely worried and can't think of anything else…

I would appreciate an answer!

Because of the call center people, just tell them in a more serious voice: I want to talk to your boss now, which is why he is illegally passing on wise telephone numbers! Most of them hang up straight away and never annoy you anymore.

Did you make sure that it was the real side of ebay? V. Have you downloaded anything about printing? I recommend Malewarebytes to run on your computer if you don't find anything, you probably have nothing.

I can't say much about the fact that the description is not sufficiently detailed (from which device did you click the link?)

What can't hurt in any case is to change your passwords at the services you logged into after clicking on the link.

I would also run a program like malwarebytes - it's free too.