A few years ago, I received a cold call from Vodafone offering me a cheaper mobile tariff as well as an offer of a free tablet, which I accepted.

The tablet arrived but I realised there was an extra monthly charge for this device, so I didn’t want it.

I rang Vodafone and it was agreed I could return it.

I thought that was the end of the matter. Recently, I discovered I had been paying a monthly sum for this unwanted item all this time and Vodafone won’t refund me. I must have paid hundreds of pounds for something I never used.

I am a disabled 85-year-old and feel I’ve been taken advantage of. Please help.