Supplying half filled gas bottles

I have been struggling for two months to have my gas bottles replaced by this supplier as the replacement gas lasted for only a few weeks - obviously the bottles were not filled.<br> <br> Nash has said he would revert to me, but I am always the one following up and to take two months is ridiculous.<br> <br> I am a member of the Parktown North Homeowners association. This is not the service provider of choice and my friends and neighbors will know about this.