Hello,
My number is xxxxxxxxxxxx. From Last 2-3 days I am unable to make any calls. Also my internet is not working at all. Yes I am getting incoming calls but restricted from making outgoing calls
(Phone number removed due to data protection, thread moved into our english community, o2 Michi)
Hi
thanks for contacting our English community. 
Obviously, there is a reason that you cannot make outgoing calls. Did you receive the contact-SMS dated 1st October 2020? Please call the number that is mentioned in the text message there.
Thanks a lot.
Loving greetings,
Tobias
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