Johannesburg - SANParks staff will continue their strike after rejecting the employer's wage increase offer, a trade union official said on Wednesday."We presented the new offer to our members and it was overwhelmingly rejected," Health and Other Service Personnel Trade Union of South Africa (Hospersa) general secretary Noel Desfontaines said.Hospersa-affiliated workers initially asked for a 9% wage increase for 2018. SANParks' first offer was 6%. On Tuesday July 25, it offered a 6.1% salary increase and a 1% salary progression for qualifying employees, Hospersa spokesperson Kevin Halama said at the time."As a compromise, our members are willing to settle for a 7.5 % salary increase for all employees," Desfontaines said.He said the strike would continue until they got what they wanted.SANParks manages all 19 of the country's national parks. Tourists can still visit them, but can expect booking or gate delays. Other services like bush walks might also not be on offer.On Monday, SANParks said it would delay taking bookings for 2018 by a week, until August 1, due to the strike.