Payment of unlimited?

[#1]

Tomorrow my Broadband will switch to Unlimited and I will be charged £11.99. Will it be £11.99 for the first 3 month or will it be just for the first month since I have already been with plusnet value for 2 months?

[#2]

I'll need to check once the product change has taken place, but I'd expect this to be £11.99 for the first 3 months.

[#3]

Thank you, can you tell me tomorrow please.
Way to close to my limit for this month, kind of risking it by even coming on this. 9.97GB, gonna turn off my router now.