I’ve been sent 5 e-mails, codes sent to mobile phone & a call from a worldwide internet service, they hung up as soon as I said OK…..am I being targeted for a scam? what’s going on?

I've received 5 e-mails (following a renewal notice) advising me that my account will be suspended if I don't verify account details & my account has exceeded it's sending & recieving limit......are these e-mails genuine?

*** Email address is removed for privacy *** ">"

*** Email address is removed for privacy ***

*** Email address is removed for privacy *** ">" - *(twice) headed ID: (24902) Hotmail ACCOUNT ALERT! (1st of July ,2012)

*** Email address is removed for privacy ***

followed with codes sent to my mobile instructing me to enter an ID code on the link to verify details & ensure my account will continue to be in service- link:

https://login.live.com/login.srf?wa=wsignin1.0rpsnv=11ct=1314335768=*** Email address is removed for privacy ***

I did open a link, panicing about the possibility of the service being stopped, now I'm worried I'm being scamed......I've just received a phone call at home saying they were calling from the worldwide internet regarding an error message I received as soon as I replied OK they hung up.......what's going on?

Should I be worried? am I being targeted or hacked......what do I need to do to prevent it happening? or check it hasn't happened.