Solar Boer not to be trusted

The last week in April I called Solar Boer (Pty) regarding a 7.2kw lithium battery. I got a quotation and informed them that I will call back the first week in May after I got paid. On the 3 May I called again to confirm as I need to arrange to be off from work and get a electrician. I did not get a invoice as there was a problem with the person that must issue it and was told to just use the online order system and send proof of payment. I did this and was assured that my battery will be dispatch on the 4 May at 9am. I arrange to be off and a electrician. On the 4 May I got a call and was told that the account that is on there web is wrong and I need to make a recall. I ask who will pay the charges and what now about the day I took off as well as the electrician. I was told that they will carry cost and that my battery will still be dispatch. Round 11:30 and after about 10 calls I was told that there is now a problem and they can not send it any more, this after I confirmed before 8am to tell the electrician to come. It is very unprofessional off then and cost me money as I still need to pay the electrician.