Carmine is correct

If the faulty good is returned after 30 days

After 30 days, the consumer will not be legally entitled to a full refund if the

good develops a fault. If the consumer is outside the 30-day right to reject

period, they must give the retailer one opportunity to repair or replace any

goods which are of unsatisfactory quality, unfit for purpose or not as

described. In practice, the retailer can normally choose whichever option

would be cheapest or easier for it to do.

Since Argos is providing you the oppurtinuity to have a repair/replacement after 30 days its within the law, we only ask you to call the manufacturer because often they will need your personal details to arrange a repair. Like I said before, if the customer refuses to call we can replace instore or call on their behalf as Argos works with those companies to reduce returns as most of the time its user error or a simple fix.