Mortgages were the fourth most complained about financial product, the FOS revealed, after PPI, credit cards and current accounts.
Mortgages garnered 2,796 complaints in the second quarter of the financial year, compared to 2,044 in Q1.
However, despite the rise, the FOS only ruled in favour or the borrower in 33% of mortgage complaints, down from 36% of cases in the three months to June.
In addition, mortgage endowment complaints grew from 603 in Q1 to 895 in Q2, with 28% of complaints upheld in the three months to September compared to 26% the previous quarter.
Overall, the FOS saw complaints fall 38% in Q2, with PPI complaints slumping almost 66% from 56,025 in the first quarter to 19,256 in Q2.
Excluding PPI, complaints for all other financial products rose 24%.
The PPI uphold rate increased to 92% during this period, up from 55% in Q1, as banks have agreed with the FOS’ findings on complaints that have previously been on hold.
A FOS spokesperson said the overall increase was not linked to any particular product, but was probably due to consumer concern over the volatile economic situation.
“Consumers are seeing things they are not happy with, like underperformance or an inability to switch out of investments as quickly as they would like.
“With the current economic situation people are looking at their finances a lot closer,” the spokesperson said.
