If A borrows money from B and B promised to pay back the money in 2014,but by 2020 still does not pay back the money. B reminded A many times, but A still did not return the money. After B told A to he is going to take legal action, A promised to pay in a few days, but A still failed to make payment. Pinnel's case and Foakers v beer, which one is more suitable to use for the relevant case