public async Task AddCompanyAsync(AddCompanyViewModel model)
        {
            var company = await _companyRepo.GetCompanyByNameAsync(model.Name);

            if (company != null)
            {
                throw new Exception("Firma już istnieje w bazie!");
            }

            var office = await _officeRepo.GetPostOfficeByName(model.Name);

            var regions = await _regionRepo.GetRegionsAsync();

            var region = regions.SingleOrDefault(x => x.PostOfficeId == office.OfficeId);

            company = new Company(region.RegionId, Guid.NewGuid(), model.Name, model.Adress, model.Longitude, model.Latitude, model.StartHour, model.FinishHour);

            await _companyRepo.AddCompanyAsync(company);
        }