Hello @raldine 
Price increases can be surprising, specially when you are not expecting it.
We always send communications on your invoice in advance to let you know about any change on for your price plan. The same thing goes if you have a discount that expires soon.
To go over your bill, you can reach a representative and you can find our contact list here.
We can also send you a PM here on the Community. Let us know what's best for you.
