NO Update regarding the faulty product 37 days ago

In April I I called and told them the Arriba cooler I had bought was not switching on and they asked me to return it via Post Office or to their Branch. I opted to send it to the branch given the nightmares Post Office. On April 27 2019, I returned it at their Rissik branch and parcel number PF545054*** was given and they said they would contact me. To-date no one has called me regarding the status of the returned item and its winter. The call center has called me 6 times regarding my payment and I have told them I wont be paying as long as I do not know the status with the returned device considering this was returned straight to them. Every time when they call me, they always say these calls are recorded for quality purposes and also they say they have taken and noted my issue down, yet they do is to ask me about my next payment and no one is giving update regarding the returned appliance. As long as you will ask me about the payment and the returned product stop calling me and asking me stupid verification question.