Welcome to Vodafone Community
Hi I took out a 24 month contract in December 2015, however my account says that I'm tied in until August 2018
Did you ever request or agree to any part of your tariff allowances being changed / improved with Vodafone as this can change your dates.
A contract has two important dates.
If none of the above aapplies then please call Customer services on 191 or use Live Chat for them to access your account and check what's occurred.
Upgrade is due in May 18, weirdly my VEA apparently expires in March 18, previously it's been the same length as the contract. Havent accepted any upgrades... I suppose I will try live chat as the Customer Services people will only speak to my husband, despite him asking for me to be added to the account several times
Would you please let us know how you get on as the information can go onto helping others in a similar situation.