Boat — unresolved ticket number is 1020705 pending from march 5th

I had boat bluetooth speakers which stopped working properly after 2-3 months. Raised a complaint and they picked the speakers for service. Later i got a mail that speaker will be replaced. Later, no replacement nothing for last 6 months. I keep getting mails that the ticket will be closed. Whenever i respond no reply to my mails. They told its been shipped and provided some tracking number. I cannot find any details for that tracking number. It says no data found. I did not get replacement unit. Whenever i call their customer support, its not connecting. Worst customer service ever come across,