First time customer not happy

Feed up purchased a bed mattress was exchanged probably 4 times within a year and I’m paying so much for interest as well called to settlement amount to get rid of this nobody gets back to me call customer service waiting on the line for so long to finally get hold of a agent to just tell me I’m in a queue and will be called when next agent has seen the account what **** me off is you can call to find out if my debit order went off but you can’t call me back within the same day to sort out an complaint or settlement cause you know you losing a customer or getting a complaint of cheap material beds