Worst Customer Service I've ever experienced

What a frustrating process this has been so far. Made administration payment on the 6th of February for my system. Sent proof of payment to accounts department, was told that from THIS date it would be a 6-8 week wait. (fair enough) After not hearing from the installers or GoSolr themselves, I phoned back on the 23rd of February - staff admitted error on their behalf of not capturing the payment correctly, but that they would CHANGE the date on the system so that installation would still take place 6-8 weeks from the 6th of February. After another period of silence I phoned again only to be told that now installation would take place on the 18th of May. The Installation should take place the first week of April. 45 Minutes on hold now and call has been dropped.