O2 Home S to Home M and change of contract length

Hello,

I received my new HomeSpot S SIM yesterday and upon reading it, I realised that I seem to have made multiple mistakes. Firstly I chose the the S package when I instead wanted the M with unlimited internet.

I also chose a limited contract of 2 years when I wish to have an unbound contract because I am not in Germany for this length of time.

I have not yet used the SIM because I fear using it will make it impossible to upgrade to the higher tariff that I want. Please let me know if it would be possible to switch to this option?

Crys

edit o2_Tobias: moved from o2 HomeSpot to our English Community