After replacing the electricity meter, the energy consumption doubled

Mosenergosbyt demanded that I replace the electric meter. I had a very old one and I agreed to replace it with Mercury 200, with a connection to the two-tariff option. After the replacement, my consumption became more than 400 kW / h per month, although the average consumption over the past three years was about 200 kW / h. I suspected his strange work after, in our absence, the Siemens two-compartment refrigerator (A +), (everything else in the house was turned off) consumed 60 kW / h in 8 days. I ask you to answer whether there are grounds for my suspicions that the counter is not working correctly, judging by the refrigerator?