Know Gear 3 battery bill

I have a Samsung Gear 3, after months of having issues where it does not charge to 100% it stops around 75% sometimes 80%, I took the watch to Samsung store in canal walk, They took the watch and booked it in for a faulty battery, which if you go look on the internet is a general fault with a specific year model and I then received a sms from WEFIX it that my watch has been booked in for repairs. it took about 2 weeks and my watch was returned to me with a new motherboard and battery. Great watch working etc, I then get a call from the WEFIX where my watch was sent to and now I need to pay for out of warranty repairs on my watch.

The technician at Samsung store marked my watch for in warranty repair and the WEFIX agent did not confirm it, now I'm being billed for a watch which was never indicated to be out of warranty. a R2000 repair bill on a watch with an know issue across the world, which btw already costs R6000 when I bought it... I tried contacting the support center via online chat and the lady just blatantly told me to take it up with the store manager, of which they don't pick up their phones, so now I'm stuck with a bill to pay with I did not opt in to accept...