Instruct: Classify the given Amazon review as either positive or negative.
Query: Don't buy-read further

I'm taking this back to the seller for two reasons. First, I've inserted fully charged Ni-Cd and NIMH batteries in it on separate occasions and the usage is disgusting. The batteries have used up all the charges within one day. Second, Siemens' 2xxx phones cannot be used when DSL service is installed on the same line, per two separate calls with Siemens. Beware!