I solved my problem of calculating DHW very quickly and competently. Aizhan Baykenova, an employee of astanaenergosbyt, helped me with this. It's nice to deal with a professional in your field.
It is very difficult for a working person to reach you.I am a pensioner, I sit before lunch and after lunch.The answering machine also says (billing department 57-65-78) wait for the answer, wait for the sea weather, just a mockery.