Bad Service Delivery from SIW

They have very good priced products (sure that is the main reason they still in business) but their service is extremely slow and poor. I have being trying to order the Phonos Kit with 4 extra Kinko Cheetah panel all to the value of R60204. I am trying to just get them add the transport cost to the quote so that I could pay the Total. I send e mails on the following dates with absolutely no success: 5 Aug 2020 @ 14h20; 11 Aug 2020 @ 07H16, I also call them on the following dates: 5 Aug 2020 @ 12H11; 5 Aug 2020 @ 14H20; 7 Aug 2020 @ 09H23; 11 Aug 2020 @ 09H34; 11 Aug 2020 @ 11H24 and again today on the 12 Aug 2020 @ 09H11 and this time trying to speak to the manager before taking this step. All calls was answered but with no satifaction at all. The person that answer the calls just promise to get back to me or get the salesperson to get back to me and they never return any call. This is extremely bad service delivery if any service at all.