As a consumer you have certain rights that protect you. You are entitled to a full refund if something you buy is:
- damaged or faulty (unless you were warned beforehand)
- different from the description given
- not fit for the purposes the goods were made for
This applies to all goods, including things bought in the sales. You do not have to accept a credit voucher, exchange or repair unless the fault is very small. Take the receipt with you if you have it. You need to return goods within a reasonable time after you bought them.
You are not entitled to any refund or exchange if you have changed your mind about what you bought, although a lot of shops will do this.
Citizens Advice has online information and advice, plus a helpline. They can explain your consumer rights for example with faulty phones or other purchases, problems with gym membership or phone contracts, as well as advice about buying a used car or how to avoid dodgy deals, scams and rip offs. They can advise you how to take things further if you need to.
Otherwise, if you need more help then contact CAB or Castlegate.