Sinbo SVC8616 Return Period Expired During Repair

I bought a Sinbo SVC8616 vacuum cleaner from an A101 store. On 28 September the product stopped working, so I wanted to return it. When I went to A101, they told me to send the product to Sinbo and that a return receipt would be sent and I could make the return with that document. I sent the vacuum cleaner to Sinbo, they repaired it and sent it back, but this process took a very long time. During this period, the return period expired. Now the device is working, but I no longer want to use this product and I want to exercise my right to return, which was effectively prevented from being used because the product was kept at service for a long time. I request that the vacuum cleaner be taken back and the full amount I paid be refunded, and that my mağduriyet be resolved as soon as possible.