Slash Command purge [Answered]

            var messages = await Context.Interaction.Channel.GetMessagesAsync(amount).FlattenAsync();
            await (Context.Interaction.Channel as SocketTextChannel).DeleteMessagesAsync(messages);

            var message = await Context.Interaction.Channel.SendMessageAsync($"{messages.Count()} messages deleted successfully!");
            await Task.Delay(4000);
            await message.DeleteAsync();