internal static void AddTxSummary(AccountTxSummary s)
        {
            var context = new AccountTxSummaryDataContext();

            context.AccountTxSummaries.InsertOnSubmit(entity: s);

            context.SubmitChanges();
        }
        internal static void DeleteTxSummaryForUser(string account, long chatId)
        {
            var context = new AccountTxSummaryDataContext();

            var summaries = GetTxSummary(account: account, days: 1000, chatId: chatId);

            foreach (var sum in summaries)
            {
                context.AccountTxSummaries.Attach(entity: sum);
                context.AccountTxSummaries.DeleteOnSubmit(entity: sum);
            }

            context.SubmitChanges();
        }