Since I already had a contract with T-mobile before this new contract, therefore I did not have to pay the 24,95 aansluitikosten.

At the moment I have overige kosten of 13,86 euros

Hi there, Since a few days I have a new Iphone 4 with a T-mobile contract I-150 of 2years. Annoyingly enough T-mobile keeps adding additional costs (overige kosten) for no reason, I am already at 15 euro overige kosten within only 4 days. The contract states that I should have unlimited internet (wi...