Many thanks for your patience, it is appreciated. I am now pleased to be able to provide further assistance with your query. First of all, I am sorry to hear about the issues brought up by this. It must be a frustrating situation to be going through.
Looking at the contract, I can see the following about the notice you are due:
In the first portion, it initially states that the first 3 months of your employment would be a probationary period and there is a month’s notice applicable either side (i.e. whether you or the employer gives notice, it would be a month).
It then goes on to state that the notice period would become 3 months either side, once the probationary period has successfully completed.
The third portion states that apart from in the probationary period, notice would be 3 months either way. However, in the probationary period it states that it should be 4 weeks either way.
So there are only two mentions of the notice in the probationary period – once says it is a month, the other 4 weeks. You can use the one more favourable to you, which would be a month, but either way – there is nothing that states it should only be 2 weeks.