The problems of Tesco credit cards and pay at pump are well documented in the forum even if totally ignored by Tesco Bank.

My next problem was with Tesco travel insurance.
The quote for insurance with pre-existing medical conditions was very competitive. When I purchased the policy, the price had dropped by £40. Odd.

I phoned Tesco travel insurance to check. You actually speak to Rock Insurance.
Very helpful. They told me there is a glitch with Tesco credit cards. It ignores the extra premium for pre-existing conditions. I had to pay this separately.

The Tesco Credit Card is not fit for purpose. No-one at Tesco Bank will take responsibility, nor even accept that there are problems.