Безопасен ли ee.co.uk?

Very bad experience with this company. They sent device that we didn't want and when we asked them to return it because we never asked for it, never used it during the few days we kept it because trying to sort out the problem.They lied also saying that we ordered it and that we will be charged for the return and for the few days we had it, even if it was not used. They also lied saying that we gave them our bank details while we didn't.